JPH027257A - displacement detection device - Google Patents

displacement detection device

Info

Publication number
JPH027257A
JPH027257A JP63158443A JP15844388A JPH027257A JP H027257 A JPH027257 A JP H027257A JP 63158443 A JP63158443 A JP 63158443A JP 15844388 A JP15844388 A JP 15844388A JP H027257 A JPH027257 A JP H027257A
Authority
JP
Japan
Prior art keywords
tape
displacement
detected
sensors
edge
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
Application number
JP63158443A
Other languages
Japanese (ja)
Inventor
Taiichiro Kato
大一郎 加藤
Hitoshi Yanagisawa
斉 柳澤
Yoshio Hayashi
善雄 林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Broadcasting Corp
Nidec Instruments Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
Sankyo Seiki Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Hoso Kyokai NHK, Japan Broadcasting Corp, Sankyo Seiki Manufacturing Co Ltd filed Critical Nippon Hoso Kyokai NHK
Priority to JP63158443A priority Critical patent/JPH027257A/en
Publication of JPH027257A publication Critical patent/JPH027257A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To detect the displacement in a width direction of a body to be detected and the inclination of the body to be detected by performing the comparative arithmetic operation of the detecting output of a sensor arranged at the edge on one side of the body to be detected and the sensor arranged at the edge on the other side. CONSTITUTION:The sensors A and B being arranged at the upper edge part of a tape 1 are constituted of light emitting parts 5a and 5b, and light receiving parts 6a and 6b arranged oppositely interposing the upper edge part of the tape, respectively. The quantity of light arriving at each of the light receiving parts 6a and 6b changes corresponding to the displacement of the tape 1, and it is possible to detect the displacement of two locations at the edge on one side of the tape 1 from the output of the sensors A and B. Also, similarly, it is possible to detect the displacement of two locations at the edge on the other side of the tape 1 from the output of the sensors C and D arranged at the edge below tape 1. Then, the detecting output of the sensors A, B, C, and D are compared with each other. In such a way, the displacement in the width direction and the inclination of the tape 1 can be detected.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、例えばテープレコーダに用いるテープのよう
な帯状のもの等を被検出体とする変位検出装置に関する
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a displacement detection device whose object to be detected is a belt-shaped object such as a tape used in a tape recorder, for example.

(従来の技術) 例えばビデオテープレコーダやデジタルオーディオテー
プレコーダその他のテープレコーダでは記録媒体として
のテープの走行系においてテープが変位するとトラッキ
ングずれ等を生じて記録再生に支障を来すことがある。
(Prior Art) For example, in a video tape recorder, a digital audio tape recorder, or other tape recorder, if the tape is displaced in the running system of the tape as a recording medium, tracking deviation may occur, which may impede recording and reproduction.

従って、テープの変位を検出し、この検出信号をテープ
位置制御装置にフィードバックしてテープが常に所定の
位置を走行するようにする必要がある。
Therefore, it is necessary to detect the displacement of the tape and feed back this detection signal to the tape position control device so that the tape always runs at a predetermined position.

第4図は、上記の如きテープ位置制御に用いるためのテ
ープ変位検出装置の従来例を示す。第4図において、テ
ープlの走行系中の適宜の位置には、テープ1の」ユ縁
部の変位を検出するためのセンサを構成する発光部2a
と受光部3aがテープlの上縁部を挾んで配置されてお
り、また、テープlの下縁部の変位を検出するためのセ
ンサを構成する発光部2bと受光部3bがテープ1の下
縁部を挾んで配置されている。受光部3aと受光部3b
の検出出力を演笠することにより、テープ1の上下方向
、即ち幅方向の変位を検出することができる。特開昭5
4−76219号公報記載のものはその例である。
FIG. 4 shows a conventional example of a tape displacement detection device used for tape position control as described above. In FIG. 4, a light emitting section 2a constituting a sensor for detecting the displacement of the edge of the tape 1 is located at an appropriate position in the running system of the tape 1.
and a light receiving section 3a are arranged to sandwich the upper edge of the tape l, and a light emitting section 2b and a light receiving section 3b forming a sensor for detecting the displacement of the lower edge of the tape l are arranged below the tape 1. They are arranged with the edges in between. Light receiving section 3a and light receiving section 3b
By calculating the detection output of , it is possible to detect the displacement of the tape 1 in the vertical direction, that is, in the width direction. Japanese Patent Application Publication No. 5
The one described in Japanese Patent No. 4-76219 is an example thereof.

(発明が解決しようとする課題) テープレコーダのテープ走行系中におけるテープの変位
には、テープの上下方向の変位のみでなく、テープ走行
方向の基準線に対してテープが傾くことがあり、このテ
ープの領きによっても記録再生に支障を来す、従って、
テープをより高精度に位置決めするためには、テープの
傾きを検出すると共にこの検出信号をフィードバンクし
て傾きを修正すべきである。しかし、上記従来の変位検
出装置では、帯状の被検出体であるテープの上縁部と下
縁部にそれぞれ111Nずつセンサを対向配置している
ため、テープの上下方向の変動を検出することができる
だけであり、テープの傾きを検出することはできない、
従って、テープの顛きを修正するための制御系を構成す
ることもできず、テープ走行の精度を高めるには限界が
あった。
(Problem to be Solved by the Invention) Displacement of the tape in the tape running system of a tape recorder includes not only vertical displacement of the tape but also tilting of the tape with respect to the reference line in the tape running direction. Recording and playback may also be hindered by the size of the tape, therefore,
In order to position the tape with higher precision, it is necessary to detect the inclination of the tape and to correct the inclination by feeding this detection signal. However, in the above-mentioned conventional displacement detection device, sensors of 111 N each are placed facing each other at the upper and lower edges of the tape, which is a belt-shaped object to be detected, so it is difficult to detect vertical fluctuations of the tape. can only detect the tilt of the tape,
Therefore, it is impossible to construct a control system for correcting the length of the tape, and there is a limit to improving the accuracy of tape running.

本発明は、かかる従来技術の問題点を解消するためにな
されたもので゛、テープやカー1′などの被検出体の幅
方向の変位のみでなく、被検出体の伸きも検出すること
ができるようにし、これをテープレコーダに応用した場
合は、より精度の高いテープ走行を可能にt7た変位検
出装置を提供することを目的とする。
The present invention has been made to solve the problems of the prior art, and is capable of detecting not only the displacement in the width direction of an object to be detected, such as a tape or car 1', but also the elongation of the object to be detected. It is an object of the present invention to provide a displacement detecting device which enables more accurate tape running when applied to a tape recorder.

(課題を解決するための手段) 本発明は、少なくとも被検出体の一方の側縁の2箇所と
他方の側縁の1箇所の変位を検出するセンサをそれぞれ
配置し、これら各センサの出力から被検出体の幅方向の
変位と傾−きとを検出することを特徴とする。
(Means for Solving the Problems) The present invention provides sensors for detecting displacement at at least two locations on one side edge and one location on the other side edge of a detected object, and detects the displacement from the outputs of these sensors. It is characterized by detecting the displacement and inclination of the object to be detected in the width direction.

(作用) 被検出体の−・方の側縁に配置されたセンサと他方の側
縁に配置されたセンサの検出出力を比較演算することに
より被検出体の幅方向の変位を検出することができる。
(Function) The displacement in the width direction of the detected object can be detected by comparing and calculating the detection outputs of the sensor placed on one side edge of the detected object and the sensor placed on the other side edge. can.

また、被検出体の一方の側縁部に配置された2個のセン
サの検出出力を比較演算することにより被検出体の傾き
を検出することができる。
Further, the inclination of the object to be detected can be detected by comparing and calculating the detection outputs of two sensors arranged on one side edge of the object to be detected.

(実施例) 以下、第1図乃至第3図を参照しながら本発明に係る変
位検出装置の実施例について説明する。
(Example) Hereinafter, an example of the displacement detection device according to the present invention will be described with reference to FIGS. 1 to 3.

なお、ここでは、テープレコーダのテープ走行系中にお
けるテープを被検出体とした例を示す。
Here, an example is shown in which a tape in a tape running system of a tape recorder is used as the object to be detected.

第1図において、符号lは帯状の被検出体としてのテー
プであり、テープ走行系中の適宜の位置においてその長
手方向に走行するものとする。テープlの上側の縁部に
対向させて2箇所にヒンサへ、Bが配置されている。各
センサ八、Bはそれぞれテープ1の上縁部を挟んで対向
配置された発光部5a、5bと受光部6a、6bで構成
されている。各発光部5a、5bから出た光の一部はテ
ープlの縁部で遮蔽され、他の光が各受光部5a。
In FIG. 1, reference numeral 1 denotes a tape as a belt-shaped object to be detected, and it is assumed that the tape runs in its longitudinal direction at an appropriate position in the tape running system. B is placed at two locations facing the upper edge of the tape l. Each sensor 8, B is composed of a light emitting part 5a, 5b and a light receiving part 6a, 6b, which are arranged opposite to each other with the upper edge of the tape 1 in between. A part of the light emitted from each light emitting part 5a, 5b is blocked by the edge of the tape l, and the other light is blocked by each light receiving part 5a.

6bに至る。従って、各受光部にa、5bに至る光の量
はテープlの変位に応じて変化し、センサA、 Bの出
力からテープ1の一方の側縁の2箇所の変位を検出する
ことができる。また、テープ1の下側の縁部に対向させ
て2箇所にセンサC,Dが配置されている。各センサC
,Dもそれぞれテープlの下縁部を挟んで対向配置され
た発光部5c、5dと受光部6c、6dで構成されてい
る。
6b. Therefore, the amount of light reaching each light receiving part a, 5b changes according to the displacement of the tape 1, and the displacement of two places on one side edge of the tape 1 can be detected from the outputs of sensors A and B. . Further, sensors C and D are arranged at two locations facing the lower edge of the tape 1. Each sensor C
, D are each composed of light emitting parts 5c, 5d and light receiving parts 6c, 6d, which are arranged opposite to each other with the lower edge of the tape l interposed therebetween.

各発光部5c、5dから出た光の一部はテープlの縁部
で遮蔽され、他の光が各受光部6c、(idに至る。従
って、各受光部6c、6dに至る光の量はテープ1の変
位に応じて変化し、よって、センサC,Dの出力からテ
ープ1の他方の側縁の2箇所の変位を検出することがで
きる。
A part of the light emitted from each light emitting part 5c, 5d is blocked by the edge of the tape l, and the other light reaches each light receiving part 6c, (id. Therefore, the amount of light reaching each light receiving part 6c, 6d changes in accordance with the displacement of the tape 1, and therefore, the displacements at two locations on the other side edge of the tape 1 can be detected from the outputs of the sensors C and D.

テープlが第2図に実線で示すような正常な位置にある
とき各センサA、B、C,Dの検出出力が等しくなるよ
うにil!iI整されているものとする。
il! so that the detection outputs of each sensor A, B, C, and D are equal when the tape l is in the normal position as shown by the solid line in FIG. It is assumed that ii is set.

いま、テープlが第2図に破線で示すように上側に変動
したとすると、テープ1の上縁側のセンサA、Bの検出
出力は低下するのに対しテープ1の下縁側のセンサC,
Dの検出出力は上昇する。テープ1が下側に変動すれば
センサA、 Bの検出出力は上昇するのに対しセンサC
,Dの検出出力は低下する。従って、 A−C又はB−D   ・・・ (1)又は (A十I
3) −(C+D)  ・・・ (2)を演算すること
によりテープ1の幅方向の変位を検出することができる
Now, if the tape l moves upward as shown by the broken line in FIG.
The detection output of D increases. If tape 1 moves downward, the detection outputs of sensors A and B will increase, while the detection output of sensor C will increase.
, D decreases. Therefore, A-C or B-D... (1) or (A1I
3) -(C+D)... By calculating (2), the displacement of the tape 1 in the width direction can be detected.

また、テープ1が第3図に破線で示すように走行方向の
基準線に対して傾いたとすると、テープlの一方の縁部
に沿って配置された2個のセンサA、Hの検出出力が互
いに変動すると共に、他方の縁部に沿って配置された2
個のセンサC,Dの検出出力も互いに変動する。そこで
、 A−B又はD−C・・・ (3) 又は (A+D)−(B十C)  ・・・ (4)を演
算ずればテープ1のイ頃きを検出することができる。
Furthermore, if the tape 1 is tilted with respect to the reference line in the running direction as shown by the broken line in FIG. 3, the detection outputs of the two sensors A and H arranged along one edge of the tape two that vary from one another and are located along the edge of the other.
The detection outputs of the sensors C and D also vary. Therefore, by calculating A-B or D-C (3) or (A+D)-(B0C) (4), it is possible to detect the beginning of tape 1.

このように、上記実施例によれば、テープlの上下の縁
部のそれぞれ2箇所にセンサを配置したため、これら各
センサの検出出力を組み合わせて演算することにより、
テープlの幅方向の変位のみでなく、テープの傾きも検
出することができる。
In this way, according to the above embodiment, since the sensors are arranged at two locations on each of the upper and lower edges of the tape l, the detection outputs of these sensors are combined and calculated.
Not only the displacement in the width direction of the tape l, but also the inclination of the tape can be detected.

また、各センサの検出出力からテープの幅方向の変位及
び領きを演算する場合、式(2)(4)のように合計4
個のセンサの検出出力を組み合わせて演算すれば、アン
プのドリフトや温度変化によるテープ幅の変化などの様
々な外乱によって受けるrg bを少なくすることがで
き、より安定した変位検出を行うことができる。
In addition, when calculating the displacement and area of the tape in the width direction from the detection output of each sensor, a total of 4
By combining and calculating the detection outputs of the individual sensors, it is possible to reduce rgb caused by various disturbances such as amplifier drift and changes in tape width due to temperature changes, making it possible to perform more stable displacement detection. .

なお、センサは、少なくともテープ1の一方の側縁の2
箇所と他方の側縁の1箇所にあれば、テープの幅方向の
変位と傾きとを検出することができる。即ち、第1図に
おけるセンサA、B、C。
Note that the sensor is located at least on one side edge of the tape 1.
If the tape is located at one location on the other side edge, displacement and inclination of the tape in the width direction can be detected. That is, sensors A, B, and C in FIG.

Dのうちの一つを省略してもよい。例えば、センサΔ、
B、Cを配置したとすると、A−C又はBCを演算し、
又はAとBの平均値とCとの差を演算することによって
テープ10幅方向の変位を検出することができ、A−B
を演算することによりテープ1の領きを検出することが
できる。
One of D may be omitted. For example, sensor Δ,
If B and C are placed, calculate A-C or BC,
Alternatively, the displacement in the width direction of the tape 10 can be detected by calculating the difference between the average value of A and B and C.
By calculating , the area of the tape 1 can be detected.

また、テープ1の一方の側縁の2箇所にセンサを配置し
、テープ1の他方の側縁の1箇所にセンサを配置する場
合、上記他方の側縁の1箇所のセンサは、上記一方の側
縁の2箇所のセンサ間の中央部に対応する位置に配置し
てもよい、その場合のテープ1の幅方向の変位の演算及
゛び傾きの演算は上記センサΔ、B、Cを配置した場合
の演算と同じである。なお、基準側縁を設ける場合には
、上記2箇所のセンサを配置した側の側縁を基準側縁と
するのが望ましい。
In addition, when sensors are arranged at two places on one side edge of the tape 1 and sensors are arranged at one place on the other side edge of the tape 1, the sensor at one place on the other side edge is The sensors Δ, B, and C may be placed at a position corresponding to the center between the two sensors on the side edges. The calculation is the same as when In addition, when providing a reference side edge, it is desirable that the side edge on the side where the two sensors are arranged is used as the reference side edge.

センサの種類は特に限定されるものではなく、以上述べ
たように配置できるものであればどのような種類のもの
でもよい。例えば、CCDラインセンサなどを用いても
よい。また、光学的なセンサに限られるものではなく、
超音波発信受信センサを用いてもよいし、信号が記録さ
れている磁気テープ等の変位検出においては上記磁気テ
ープ等に摺接する磁気ヘッドを用いてもよい。
The type of sensor is not particularly limited, and any type of sensor may be used as long as it can be arranged as described above. For example, a CCD line sensor or the like may be used. In addition, it is not limited to optical sensors,
An ultrasonic transmitter/receiver sensor may be used, or a magnetic head that slides into contact with the magnetic tape or the like may be used to detect the displacement of the magnetic tape or the like on which signals are recorded.

本発明は、テープレコーダにおけるテープの変位検出の
みでなく、テープに頬する帯状のものの化カード等の変
位検出に用いることができる。また、被検出体は必ずし
も移動しているものに限られるものではなく、静止して
いるものの変位及び傾き検出に用いることもできる。
The present invention can be used not only for detecting the displacement of a tape in a tape recorder, but also for detecting the displacement of a band-shaped object such as a card that is attached to the tape. Furthermore, the object to be detected is not necessarily limited to one that is moving, but can also be used to detect the displacement and inclination of a stationary object.

(発明の効果) 本発明によれば、少なくとも被検出体の一方の側縁の2
箇所と他方の側縁の1箇所の変位を検出するセンサをそ
れぞれ配置したため、被検出体の一方側のセンサの出力
と他方側のセンサの出力とを比較演算することにより被
検出体の幅方向の変位を検出することができ、さらに、
被検出体の一方側の2箇所に配置されたセンサの出力を
比較演算することにより被検出体の傾きも検出すること
が可能となった。
(Effects of the Invention) According to the present invention, at least two of the side edges of the detected object
Since sensors are arranged to detect displacement at one location and one location on the other side edge, the output of the sensor on one side of the object to be detected and the output of the sensor on the other side are compared and calculated to determine the displacement in the width direction of the object to be detected. can detect the displacement of
By comparing and calculating the outputs of sensors placed at two locations on one side of the object, it is now possible to detect the inclination of the object.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る変位検出装置の実施例を示す斜視
図、第2図は同上実施例による被検出体の幅方向の変位
検出原理を示す正面図、第3図は同じく傾き検出原理を
示す正面図、第4図は従来の変位検出装置の例を示す斜
視図である。
FIG. 1 is a perspective view showing an embodiment of the displacement detection device according to the present invention, FIG. 2 is a front view showing the principle of displacement detection in the width direction of a detected object according to the same embodiment, and FIG. 3 is the same principle of tilt detection. FIG. 4 is a front view showing an example of a conventional displacement detection device.

Claims (1)

【特許請求の範囲】[Claims] 被検出体の変位検出装置であって、少なくとも被検出体
の一方の側縁の2箇所と他方の側縁の1箇所の変位を検
出するセンサをそれぞれ配置し、これら各センサの出力
から被検出体の幅方向の変位と傾きとを検出することを
特徴とする変位検出装置。
This is a displacement detection device for a detected object, in which sensors are arranged to detect displacement at at least two locations on one side edge and one location on the other side edge of the detected object, and the detected object is detected from the outputs of these sensors. A displacement detection device characterized by detecting displacement and inclination of a body in the width direction.
JP63158443A 1988-06-27 1988-06-27 displacement detection device Pending JPH027257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63158443A JPH027257A (en) 1988-06-27 1988-06-27 displacement detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63158443A JPH027257A (en) 1988-06-27 1988-06-27 displacement detection device

Publications (1)

Publication Number Publication Date
JPH027257A true JPH027257A (en) 1990-01-11

Family

ID=15671880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63158443A Pending JPH027257A (en) 1988-06-27 1988-06-27 displacement detection device

Country Status (1)

Country Link
JP (1) JPH027257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019163939A (en) * 2018-03-19 2019-09-26 セイコーエプソン株式会社 Ultrasonic sensor and electronic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929619A (en) * 1972-07-11 1974-03-16
JPS58194127A (en) * 1982-05-07 1983-11-12 Matsushita Electric Ind Co Ltd Tracking detection signal generation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929619A (en) * 1972-07-11 1974-03-16
JPS58194127A (en) * 1982-05-07 1983-11-12 Matsushita Electric Ind Co Ltd Tracking detection signal generation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019163939A (en) * 2018-03-19 2019-09-26 セイコーエプソン株式会社 Ultrasonic sensor and electronic device
CN110285777A (en) * 2018-03-19 2019-09-27 精工爱普生株式会社 Ultrasonic sensors and electronics
CN110285777B (en) * 2018-03-19 2024-01-30 精工爱普生株式会社 Ultrasonic sensor and electronic device

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