JPH0632567Y2 - Position detector - Google Patents
Position detectorInfo
- Publication number
- JPH0632567Y2 JPH0632567Y2 JP1989150059U JP15005989U JPH0632567Y2 JP H0632567 Y2 JPH0632567 Y2 JP H0632567Y2 JP 1989150059 U JP1989150059 U JP 1989150059U JP 15005989 U JP15005989 U JP 15005989U JP H0632567 Y2 JPH0632567 Y2 JP H0632567Y2
- Authority
- JP
- Japan
- Prior art keywords
- detected
- light receiving
- light
- receiving element
- output
- 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.)
- Expired - Lifetime
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Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、テープ、シート、カードなどのエッジ位置を
検出する位置検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a position detection device for detecting the edge position of a tape, a sheet, a card, or the like.
従来より、エッジ位置を検出する位置検出装置として
は、インクリメンタルエンコーダが知られている。この
インクリメンタルエンコーダでは、第８図のように、発
光素子２の発光出力の変動をモニターして光量を補償す
るために、発光素子２からの光ａを受光する参照用受光
素子P1と、発光素子２の光ａをテープ等の被検出体１に
当てて、被検出体１に当たらない発光素子２からの光ａ
を受光する測定用受光素子P2とを備え、参照用受光素子
P1の出力は第９図のオペアンプ５に入力して増幅し、測
定用受光素子P2の出力はオペアンプ７に入力して増幅
し、オペアンプ５、７の出力は、検出信号の差を計算す
るための演算回路である演算増幅器の差動増幅即ち、引
算器13に接続していた。そしてこの引算器13の出力差
（Ｖ１−Ｖ２）＝Ｖ８によって被検出体１のエッジ部の
上下方向の位置が所定の位置であるかどうかを検出して
いた。Conventionally, an incremental encoder is known as a position detection device that detects an edge position. In this incremental encoder, as shown in FIG. 8, a reference light receiving element P1 that receives the light a from the light emitting element 2 and a light emitting element in order to monitor the variation of the light emission output of the light emitting element 2 and compensate the light amount. The light a from the light emitting element 2 which does not hit the object 1 to be detected
And a photodetector P2 for measurement that receives
The output of P1 is input to and amplified by the operational amplifier 5 in FIG. 9, the output of the photodetector P2 for measurement is input to and amplified by the operational amplifier 7, and the outputs of the operational amplifiers 5 and 7 are for calculating the difference between the detection signals. The differential amplification of the operational amplifier which is the operational circuit of the above, that is, the subtracter 13 was connected. Then, the output difference (V1−V2) = V8 of the subtracter 13 is used to detect whether the vertical position of the edge portion of the detected object 1 is a predetermined position.
このような２つの出力の差を検知して、位置を検出する
位置検出装置では、被検出体１の上下方向の位置は検出
出来るが、傾き方向の検出までは出来なかった。A position detecting device that detects the position by detecting the difference between the two outputs as described above can detect the vertical position of the detected object 1, but cannot detect the tilt direction.
本考案は上記欠点に鑑み、テープ、シート、カード等の
被検出体の傾き検出と同時に上下位置の検出を精度良く
行う事が出来る位置検出装置を提供することを目的とす
る。The present invention has been made in view of the above-mentioned drawbacks, and an object thereof is to provide a position detection device capable of detecting the tilt of a detected object such as a tape, a sheet, a card and the like, and at the same time detecting the vertical position with high accuracy.
本考案は、発光素子と、この発光素子からの光を受光す
る受光素子を配置し、これら発光素子から受光素子に至
る光路上に配置された被検出体の位置を受光素子の出力
によって検出する検出装置において、受光素子は、常に
発光素子からの光を受光する参照部と、被検出体によっ
て受光面の一部が覆われる２つの測定部とを有し、上記
２つの測定部を被検出体のエッジ部と平行に配置し、上
記２つの測定部の出力により上記被検出体の位置及び傾
きを検出するように構成したものである。According to the present invention, a light emitting element and a light receiving element for receiving light from the light emitting element are arranged, and the position of an object to be detected arranged on the optical path from the light emitting element to the light receiving element is detected by the output of the light receiving element. In the detection device, the light receiving element has a reference portion that always receives light from the light emitting element, and two measuring portions whose part of the light receiving surface is covered by the object to be detected. It is arranged in parallel with the edge portion of the body, and is configured to detect the position and inclination of the detected body by the outputs of the two measuring sections.
以下、図示の実施例で本考案を説明する。本考案を、被
検出体１として磁気テープを用いた記録再生装置などの
テープの傾きの検出と上下動を検出する位置検出装置で
述べると、第１図から第３図で、例えば発光ダイオード
などの発光素子２からの光ａを受光する例えばシリコン
等の基板３に２つづつ対に並べられた発光ダイオードな
どの受光素子P1、P2、P3、P4を、平行光にするレンズ４を
介在させて発光素子２に対向配置し、これら発光素子２
から受光素子P1、P2、P3、P4に至光路上に走行する被検出
体１の上方エッジ位置を受光素子P1、P2、P3、P4の出力に
よって検出する。The present invention will be described below with reference to the illustrated embodiments. The present invention will be described with reference to a position detecting device for detecting the tilt and vertical movement of a tape, such as a recording / reproducing device using a magnetic tape as the object to be detected 1, and referring to FIGS. The light-receiving elements P1, P2, P3, P4 such as light-emitting diodes arranged in pairs on the substrate 3 such as silicon for receiving the light a from the light-emitting element 2 of FIG. Are arranged to face the light emitting element 2 and
To the light receiving elements P1, P2, P3, P4, the upper edge position of the detected object 1 traveling on the optical path is detected by the outputs of the light receiving elements P1, P2, P3, P4.
発光素子２は、被検出体１の正規の走行方向に配置され
た受光素子P1、P2、P3、P4の中央と光軸が一致するように
配置されている。The light emitting element 2 is arranged so that the optical axes thereof coincide with the centers of the light receiving elements P1, P2, P3, and P4 arranged in the normal traveling direction of the detected body 1.
受光素子P1、P2、P3、P4は、一側の参照用受光素子P1、測
定用受光素子P2と、他側の参照用受光素子P3、測定用受
光素子P4からなっている。測定用受光素子P2、P4は被検
出体の正規の走行方向におけるエッジ部１′と平行に配
置されている。The light receiving elements P1, P2, P3, and P4 are composed of a reference light receiving element P1 on one side, a measurement light receiving element P2, a reference light receiving element P3 on the other side, and a measurement light receiving element P4. The light receiving elements P2 and P4 for measurement are arranged in parallel with the edge portion 1'in the normal traveling direction of the object to be detected.
参照用受光素子P1と参照用受光素子P3は、常に被検出体
１の影にならない位置に配置されているので、受光面全
面が常に発光素子２からの光を受光する。The reference light-receiving element P1 and the reference light-receiving element P3 are always arranged at positions that do not shade the object to be detected 1, so that the entire light-receiving surface always receives the light from the light-emitting element 2.
参照用受光素子P1と参照用受光素子P3の出力はオペアン
プ５、６に入力されて増幅されるが、このオペアンプ
５、６の出力Ｖ１、Ｖ３は参照用受光素子P1と参照用受
光素子P3の全面が常に発光素子２からの光を受光するも
のであるから、発光素子２の出力の変動をモニターして
光量を補償するための参照部Ａ、Ｃとして作用する。The outputs of the reference light receiving element P1 and the reference light receiving element P3 are input to and amplified by the operational amplifiers 5 and 6. The outputs V1 and V3 of the operational amplifiers 5 and 6 are the same as those of the reference light receiving element P1 and the reference light receiving element P3. Since the entire surface always receives the light from the light emitting element 2, it functions as reference portions A and C for monitoring the fluctuation of the output of the light emitting element 2 and compensating the light amount.
測定用受光素子P2と測定用受光素子P4の出力は、オペア
ンプ７、８に入力されて増幅されるが、このオペアンプ
７、８の出力Ｖ２、Ｖ４は、被検出体１の位置が傾き又
は上下に変動することによってその出力も変動するの
で、被検出体１の位置の測定部Ｂ、Ｄとして作用する。The outputs of the measurement light receiving element P2 and the measurement light receiving element P4 are input to and amplified by the operational amplifiers 7 and 8. The outputs V2 and V4 of the operational amplifiers 7 and 8 are such that the position of the object to be detected 1 is tilted or vertically. Since the output also fluctuates due to fluctuations in 1 to 3, it acts as the measurement units B and D at the position of the detected object 1.
参照部Ａと測定部Ｂの出力即ち、オペアンプ５、７の出
力は、参照部Ａの検出信号Ｖ１に対する測定部Ｂの検出
信号Ｖ２の比を計算するための演算回路である割算器９
に夫々接続される。割算器９の出力Ｖ５は単独では被検
出体１の位置が上下の所定位置であるかどうかを検出し
ている。The outputs of the reference unit A and the measurement unit B, that is, the outputs of the operational amplifiers 5 and 7 are dividers 9 which are arithmetic circuits for calculating the ratio of the detection signal V2 of the measurement unit B to the detection signal V1 of the reference unit A.
Respectively connected to. The output V5 of the divider 9 alone detects whether or not the position of the detected object 1 is a predetermined upper and lower position.
又、参照部Ｃと測定部Ｄの出力即ち、オペアンプ６、８
の出力は、参照部Ｃの検出信号Ｖ３に対する測定部Ｄの
検出信号Ｖ４の比を計算するための演算回路である割算
器10に夫々接続されている。割算器10の出力Ｖ６は単独
では被検出体１の位置が上下の所定位置であるかどうか
を検出している。Also, the outputs of the reference section C and the measurement section D, that is, the operational amplifiers 6 and 8
The outputs of are respectively connected to the divider 10 which is an arithmetic circuit for calculating the ratio of the detection signal V4 of the measuring section D to the detection signal V3 of the reference section C. The output V6 of the divider 10 alone detects whether or not the position of the detected object 1 is a predetermined upper and lower position.
更に割算器９、10の出力は、割算器９の検出信号と割算
器10の差を計算するための演算回路である引算器11に夫
々接続されている。引算器11では出力差（Ｖ５−Ｖ６）
＝Ｖ７を検出して、被検出体１の位置が傾きのない所定
の位置であるかどうかを検出している。Further, the outputs of the dividers 9 and 10 are connected to a subtractor 11 which is an arithmetic circuit for calculating the difference between the detection signal of the divider 9 and the divider 10. Output difference (V5-V6) in subtractor 11
= V7 is detected to detect whether or not the position of the detected object 1 is a predetermined position without inclination.
尚、オペアンプ５の出力は、発光素子２にその出力が接
続されたオペアンプ12の一方の入力端に接続されてお
り、参照部Ａからの出力Ｖ１が発光素子２のオペアンプ
12にフィードバックされるので、発光素子２の出力が、
所定の値に設定、また、安定化されると共に、出力Ｖ１
の値も規定値となるようにオペアンプ12の出力が制御さ
れる。The output of the operational amplifier 5 is connected to one input terminal of an operational amplifier 12 whose output is connected to the light emitting element 2, and the output V1 from the reference section A is the operational amplifier of the light emitting element 2.
Since it is fed back to 12, the output of the light emitting element 2 is
Set to a predetermined value, stabilized, and output V1
The output of the operational amplifier 12 is controlled so that the value of is also a specified value.
上記位置検出装置の動作は、テープ等の被検出体１の走
行状態において、リールの巻取りムラなどによって被検
出体１が発光素子P2、P4に対し同等量上下に変動する
と、発光素子２からの光ａが測定用受光素子P2、P4の受
光面で被検出体１の第１図で影ｂになって受光面積が変
化するので測定部Ｂ、Ｄからの検出出力Ｖ２、Ｖ４が変
動する。The operation of the position detecting device is as follows. When the detected object 1 such as a tape moves in the running state and the detected object 1 fluctuates up and down by an equal amount with respect to the light emitting elements P2 and P4 due to reel winding unevenness or the like, Light a becomes a shadow b in FIG. 1 of the object to be detected 1 on the light receiving surfaces of the measurement light receiving elements P2 and P4, and the light receiving area changes, so that the detection outputs V2 and V4 from the measurement units B and D fluctuate. .
この変動成分を演算回路の割算器９、10で計算して検出
出力V1、V2、V3、V4の比はＶ５及びＶ６で夫々上下の位置
変動が検出でき、被検出体１が受光素子P2、P4に対し同
等量上下に変動すると、Ｖ５＝Ｖ６でＶ５の数値で上下
位置が補正される。This fluctuation component is calculated by the dividers 9 and 10 of the arithmetic circuit, and the ratio of the detection outputs V1, V2, V3, and V4 is V5 and V6, respectively, and the vertical position fluctuation can be detected, and the detected object 1 receives the light receiving element P2. , P4, the vertical position is corrected by the numerical value of V5 when V5 = V6.
又、参照部Ａからの検出出力Ｖ１と測定部Ｂからの検出
出力Ｖ２及び参照部Ｃからの検出出力Ｖ３と測定部Ｄか
らの検出出力Ｖ４を夫々計算すると、 Ｖ５＝Ｖ１／Ｖ２、Ｖ６＝Ｖ３／Ｖ４である。Further, when the detection output V1 from the reference section A, the detection output V2 from the measurement section B, and the detection output V3 from the reference section C and the detection output V4 from the measurement section D are calculated, respectively, V5 = V1 / V2, V6 = It is V3 / V4.
次に、周囲温度や暗電流などの影響により、受光素子の
出力がＸ％変動したとする。この比を計算すると、 比＝（Ｖ１・Ｘ）／（Ｖ２・Ｘ） ＝Ｖ１／Ｖ２ となり、変動分は補正され出力は変動しない。Next, it is assumed that the output of the light receiving element fluctuates by X% due to the influence of the ambient temperature and the dark current. When this ratio is calculated, the following ratio is obtained: ratio = (V1.X) / (V2.X) = V1 / V2, and the variation is corrected and the output does not vary.
これに対して、従来例第９図のように出力Ｖ１とＶ２の
差を検出した場合には、 差＝Ｖ１−Ｖ２ 差＝（Ｖ１・Ｘ）−（Ｖ２・Ｘ） ＝（Ｖ１−Ｖ２）・Ｘ 差はＸ％出力が変動する。On the other hand, when the difference between the outputs V1 and V2 is detected as shown in FIG. 9 of the conventional example, difference = V1-V2 difference = (V1.X)-(V2.X) = (V1-V2)・ The X difference changes the X% output.
前記のように割算回路を用いることにより、出力信号に
対して掛算されるような周囲温度などの影響による成分
は除去でき、正確な位置検出が可能となる。By using the division circuit as described above, the component due to the influence of the ambient temperature or the like which is multiplied by the output signal can be removed, and the accurate position detection can be performed.
次にテープ等の被検出体１の走行状態において、リール
の巻取りムラなどによって被検出体１が受光素子P2、P4
に対し第４図のように上下に変動すると共に傾くと、発
光素子２からの光ａが測定用受光素子P2、P4の受光面で
被検出体１の影になって光が当たる受光素子P1、P2、P3、P
4の受光面積がP1＝P3＞P2＞P4の関係になる。従つて夫
々の受光素子P1、P2、P3、P4に接続されたオペアンプ５、
６、７、８の検出出力はＶ１＝Ｖ３＞Ｖ２＞Ｖ４とな
る。次に割算器９、10で計算すると、 Ｖ５＝Ｖ２／Ｖ１、Ｖ６＝Ｖ４／Ｖ３となる。Next, when the object to be detected 1 such as a tape is running, the object to be detected 1 receives light from the light receiving elements P2 and P4 due to uneven winding of the reel.
On the other hand, when the light a from the light emitting element 2 is tilted while vertically fluctuating as shown in FIG. 4, the light receiving element P1 is exposed to the light by the light receiving surfaces of the measurement light receiving elements P2 and P4 in the shadow of the object to be detected 1. , P2, P3, P
The light receiving area of 4 has a relation of P1 = P3>P2> P4. Therefore, the operational amplifier 5 connected to each of the light receiving elements P1, P2, P3, P4,
The detection outputs of 6, 7, and 8 are V1 = V3>V2> V4. Next, when calculated by the dividers 9 and 10, V5 = V2 / V1 and V6 = V4 / V3.
又、Ｖ１＝Ｖ３＞Ｖ２＞Ｖ４からＶ５＞Ｖ６となる。Also, V1 = V3> V2> V4 to V5> V6.
次に引算器11でＶ５とＶ６を比較すると、出力差（Ｖ５
−Ｖ６）＞０となり、正の出力Ｖ７が引算器11から発生
する。即ち、第４図の如く被検出体１が右上がりの傾き
の場合は出力Ｖ７は正の出力で現れ、左上がりの傾きの
場合は出力差（Ｖ５−Ｖ６）＜０となり、出力Ｖ７は負
の出力で現れる。Next, when the subtracter 11 compares V5 and V6, the output difference (V5
-V6)> 0 and a positive output V7 is generated from the subtractor 11. That is, as shown in FIG. 4, the output V7 appears as a positive output when the detected object 1 has an upward inclination, and the output difference (V5-V6) <0 when the detection object 1 has an upward inclination, and the output V7 is negative. Appears in the output of.
傾きを修正する場合は出力Ｖ７が０になるように被検出
体１を図示しないアクチュエータ等で修正すれば良い。When correcting the inclination, the detected body 1 may be corrected by an actuator (not shown) or the like so that the output V7 becomes zero.
傾きが０になり、かつ前記のようにＶ５の数値が所定の
比になった時、被検出体１のエッジ部が所定の上下位置
に補正されたことになる。When the inclination becomes 0 and the value of V5 becomes a predetermined ratio as described above, it means that the edge portion of the detected object 1 is corrected to a predetermined vertical position.
前記のように２つづつ対に並べられた受光素子P1、P2、P
3、P4を参照用受光素子P1、測定用受光素子P2と、他側の
参照用受光素子P3、測定用受光素子P4とし、その出力を
オペアンプ５、６、７、８と割算器９、10に夫々接続
し、参照部Ａの検出信号Ｖ１に対する測定部Ｂの検出信
号Ｖ２の比と、参照部Ｃの検出信号Ｖ３に対する測定部
Ｄの検出信号Ｖ４の比を計算し、更に引算器11で割算器
９、10の出力Ｖ５とＶ６を比較することで、被検出体１
の位置が傾きのない所定の位置であるかどうかと、割算
器９の出力Ｖ５又は割算器10の出力Ｖ６と所定の数値と
の比で被検出体１の位置が上下の所定位置であるかどう
かが簡単な構成で容易に検出される。As described above, the light receiving elements P1, P2, P arranged in pairs of two each.
Reference numerals 3 and P4 denote a reference light receiving element P1, a measurement light receiving element P2, a reference light receiving element P3 on the other side, and a measurement light receiving element P4, and the outputs thereof are operational amplifiers 5, 6, 7, 8 and a divider 9, 10 are respectively connected to calculate the ratio of the detection signal V2 of the measurement unit B to the detection signal V1 of the reference unit A and the ratio of the detection signal V4 of the measurement unit D to the detection signal V3 of the reference unit C, and further subtract By comparing the outputs V5 and V6 of the dividers 9 and 10 with 11, the detected object 1
Is a predetermined position without inclination, and whether the position of the object to be detected 1 is the upper and lower predetermined positions depending on the ratio between the output V5 of the divider 9 or the output V6 of the divider 10 and a predetermined numerical value. Whether or not there is is easily detected with a simple configuration.
又、参照部Ａの検出信号Ｖ１に対する測定部Ｂの検出信
号Ｖ２の比、参照部Ｃの検出信号Ｖ３に対する測定部Ｄ
の検出信号Ｖ４の比を取って補正しているので、高精度
が維持出来る。Further, the ratio of the detection signal V2 of the measurement unit B to the detection signal V1 of the reference unit A, and the measurement unit D to the detection signal V3 of the reference unit C
Since the correction is performed by taking the ratio of the detection signal V4 of, the high accuracy can be maintained.
更に補正していない数値を比較すると、光の強さの変動
で精度良い検出が出来ないが、参照部で補正した数値同
志を比較し、傾きを検出するので、精度が良い。Further, when the numerical values that are not corrected are compared, the detection cannot be performed accurately due to the fluctuation of the light intensity, but the numerical values corrected by the reference unit are compared and the inclination is detected, so that the accuracy is high.
又、傾きが０の時に上下位置検出すれば、上下位置も高
い精度に検出出来る。If the vertical position is detected when the inclination is 0, the vertical position can also be detected with high accuracy.
更に割算回路を用いることにより、出力信号に対して掛
算されるような周囲温度や暗電流などの影響による成分
は除去でき、正確な位置検出が可能となる。Further, by using the division circuit, the components due to the influence of the ambient temperature, dark current, etc., which are multiplied by the output signal, can be removed, and accurate position detection becomes possible.
第６図は発光素子２とレンズ４を２組設けて夫々参照用
受光素子P1と測定用受光素子P2側と参照用受光素子P3、
測定用受光素子P4側とした変形例である。レンズ４は両
者に共通の蒲鉾形のレンズを用いてもよい。FIG. 6 shows that two sets of light-emitting element 2 and lens 4 are provided, and a reference light-receiving element P1, a measurement light-receiving element P2 side and a reference light-receiving element P3,
This is a modified example in which the light receiving element for measurement P4 is provided. As the lens 4, a kamaboko-shaped lens common to both may be used.
第７図は参照用受光素子をP3は省略してP1を中央１箇所
として兼用した変形例であり、 位置検出は、参照用受光素子P1に対して測定用受光素子
P2と測定用受光素子P4の出力の比を取る。そして測定用
受光素子P2と測定用受光素子P4の位置を基準として被検
出体１の位置及び傾きを検出する。傾きが０の時、上下
位置検知をする。FIG. 7 shows a modified example in which P3 is omitted as the reference light receiving element and P1 is also used as one central portion. For position detection, the reference light receiving element P1 is used for the measurement light receiving element.
Take the ratio of the output of P2 and the light receiving element P4 for measurement. Then, the position and the inclination of the detected object 1 are detected with reference to the positions of the measurement light receiving element P2 and the measurement light receiving element P4. When the inclination is 0, the vertical position is detected.
第１図、第２図、第６図において、レンズ４は省略して
もよい。In FIGS. 1, 2, and 6, the lens 4 may be omitted.
本考案は上述のように被検出体のエッジ部と平行に配置
された２つの測定部の出力検出による簡単な構成で、被
検出体の上下位置及び傾きを精度良く、かつ正確に位置
検出が可能となる等優れた効果を奏する位置検出装置を
提供することが出来る。As described above, the present invention has a simple configuration by detecting the outputs of the two measuring units arranged in parallel with the edge of the object to be detected, so that the vertical position and tilt of the object to be detected can be detected accurately and accurately. It is possible to provide a position detection device that has an excellent effect such as possible.
図面は本考案の実施例が示され、第１図は位置検出装置
をテープの記録再生装置に実施した斜視図、第２図は位
置検出装置の側面図、第３図は受光素子の正面図、第４
図は被検出体が傾いて走行される動作正面図、第５図は
位置検出装置の回路構成図、第６図は第３図の受光素子
に２組の発光素子で光を当てた正面図、第７図は受光素
子の変形例正面図、第８図は従来の位置検出装置の斜視
図、第９図は同位置検出装置の回路構成図である。 １……被検出体、２……発光素子、P1、P2、P3、P4……受
光素子、Ａ、Ｃ……参照部、Ｂ、Ｄ……測定部、ａ……
光。An embodiment of the present invention is shown in the drawings, FIG. 1 is a perspective view of a tape recording / reproducing apparatus using a position detecting device, FIG. 2 is a side view of the position detecting device, and FIG. 3 is a front view of a light receiving element. , 4th
FIG. 5 is a front view of an operation in which an object to be detected is tilted, FIG. 5 is a circuit configuration diagram of a position detection device, and FIG. 6 is a front view of the light receiving element of FIG. FIG. 7 is a front view of a modified example of the light receiving element, FIG. 8 is a perspective view of a conventional position detecting device, and FIG. 9 is a circuit configuration diagram of the position detecting device. 1 ... Object to be detected, 2 ... Light emitting element, P1, P2, P3, P4 ... Light receiving element, A, C ... Reference section, B, D ... Measuring section, a ...
light.
フロントページの続き (72)考案者 小林 一雄 長野県諏訪郡下諏訪町5329番地 株式会社 三協精機製作所内 (56)参考文献 特開 昭59−20811（ＪＰ，Ａ) 特開 昭61−233305（ＪＰ，Ａ)Front page continued (72) Inventor Kazuo Kobayashi 5329 Shimosuwa-cho, Suwa-gun, Nagano Sankyo Seiki Seisakusho Co., Ltd. (56) References JP-A-59-20811 (JP, A) JP-A-61-233305 (JP) , A)
Claims (1)
する受光素子を配置し、これら発光素子から受光素子に
至る光路上に配置された被検出体の位置を受光素子の出
力によって検出する検出装置において、受光素子は、常
に発光素子からの光を受光する参照部と、被検出体によ
って受光面の一部が覆われる２つの測定部とを有し、上
記２つの測定部を被検出体のエッジ部と平行に配置し、
上記２つの測定部の出力により上記被検出体の位置及び
傾きを検出するように構成したことを特徴とする位置検
出装置。1. A light emitting element and a light receiving element for receiving light from the light emitting element are arranged, and the position of an object to be detected arranged on the optical path from the light emitting element to the light receiving element is detected by the output of the light receiving element. In the detection device, the light receiving element has a reference section that always receives light from the light emitting element, and two measuring sections whose part of the light receiving surface is covered by the object to be detected. Place it parallel to the edge of the detector,
A position detecting device configured to detect the position and inclination of the object to be detected by the outputs of the two measuring units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989150059U JPH0632567Y2 (en) | 1989-12-28 | 1989-12-28 | Position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989150059U JPH0632567Y2 (en) | 1989-12-28 | 1989-12-28 | Position detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0390006U JPH0390006U (en) | 1991-09-13 |
| JPH0632567Y2 true JPH0632567Y2 (en) | 1994-08-24 |
Family
ID=31696427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989150059U Expired - Lifetime JPH0632567Y2 (en) | 1989-12-28 | 1989-12-28 | Position detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0632567Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920811A (en) * | 1982-07-28 | 1984-02-02 | Yokogawa Hokushin Electric Corp | Optical type displacement transducer |
| JPH0656286B2 (en) * | 1985-04-09 | 1994-07-27 | 松下電器産業株式会社 | Position detector |
-
1989
- 1989-12-28 JP JP1989150059U patent/JPH0632567Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0390006U (en) | 1991-09-13 |
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