JPS582751A - Detecting device for rotating body - Google Patents
Detecting device for rotating bodyInfo
- Publication number
- JPS582751A JPS582751A JP10208081A JP10208081A JPS582751A JP S582751 A JPS582751 A JP S582751A JP 10208081 A JP10208081 A JP 10208081A JP 10208081 A JP10208081 A JP 10208081A JP S582751 A JPS582751 A JP S582751A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- rotating body
- magnet
- rotating
- tip
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 13
- 239000003463 adsorbent Substances 0.000 claims description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Optical Transform (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、送受光を行い得や一芯光ファイバを用いた回
転体検出装置に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating body detection device using a single-core optical fiber capable of transmitting and receiving light.
回転体に光ファイバにより光信号を送り、その反射光ｋ
パルス変換し、パルス数によって回転体の回転数を検
出する装置が各種産業分野に利用されている。An optical signal is sent to the rotating body through an optical fiber, and the reflected light k
Devices that convert pulses and detect the rotational speed of a rotating body based on the number of pulses are used in various industrial fields.
しかるに、上記の回転体検出装＆を水中、油中あるいは
湿度の高い場所で使用する場合に回転体の回転数の検出
部である光ファイバの先端部に露結を生じたり、汚水等
により検出精度を低下させる欠点があった。However, when using the above-mentioned rotating body detection device underwater, in oil, or in a place with high humidity, dew condensation may occur on the tip of the optical fiber that detects the rotation speed of the rotating body, or detection may occur due to sewage, etc. This had the drawback of reducing accuracy.
本発明は、上記の事情に基づきなされ几もので気密構造
にしたボックス内に入力軸に接絣した回転板と対向して
磁気継手のごとく回転体を配置しこの回転体に気密的に
支持した一芯光ファイバにより光信号を送り、反射した
光のパルス数をカウントして、入力軸に回期するＰｖ−
一回転体の回転数を検出し得るようにした回転体検出装
置を提供することを目的とする。The present invention was made based on the above-mentioned circumstances, and a rotating body is disposed like a magnetic coupling in a box having an elaborate and airtight structure, facing a rotating plate attached to an input shaft, and is airtightly supported on this rotating body. Pv-
It is an object of the present invention to provide a rotating body detection device capable of detecting the rotation speed of a single rotating body.
以下に、本発明の一実施例を図面を参照して説明する。An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の概略構成図である。FIG. 1 is a schematic configuration diagram of the present invention.
同図において、駆動機構部】ば、被検出回転体（図示せ
ず）Ｋ結合された回転軸（入力軸）２−とこの回転軸２
の先端に取り付けられた回転＠３とこの回転板３の表面
の外周複数箇所に取り付けられた磁石４と、回転板３と
一定の間ｐＪを以って対向配置され、かつその表面外周
に前記磁石４に対応して設けた吸着材５′ｔ−有するセ
ンサ円板６と、このセンサ円＠６の後方に配置され、光
信号の送受光を行う一芯先フアイバフと、このファイバ
７に結合された光信号の送受光回路８と、この送受光回
路８と結合されたカウンタ回路９とから構成されている
。In the same figure, a drive mechanism part] is a rotary shaft (input shaft) 2- connected to a rotating body to be detected (not shown) and a rotary shaft 2-.
The rotation @ 3 attached to the tip of the rotating plate 3 and the magnets 4 attached to multiple locations on the outer periphery of the surface of the rotating plate 3 are arranged opposite to the rotating plate 3 at a certain distance pJ, and the A sensor disc 6 having an adsorbent 5't provided corresponding to the magnet 4, a single fiber buff placed behind this sensor circle @ 6 for transmitting and receiving optical signals, and coupled to this fiber 7. The light transmitting/receiving circuit 8 includes a light transmitting/receiving circuit 8 for transmitting and receiving optical signals, and a counter circuit 9 coupled to the light transmitting/receiving circuit 8.
そして、今、被検出回転体の回転により回転軸２が回転
すると、回転板３が回転し、この回転板３０表面に設け
た磁石４によって吸着板５に磁力を及ぼし、磁気継手を
構成してセンサ円板６が回転させられる。Now, when the rotating shaft 2 rotates due to the rotation of the rotating body to be detected, the rotating plate 3 rotates, and the magnet 4 provided on the surface of the rotating plate 30 exerts a magnetic force on the attraction plate 5, forming a magnetic joint. The sensor disk 6 is rotated.
センサ円！＆６の後方には、−芯先フアイバフが配置さ
れているので、送受光回路８の例えば、発えば受光トラ
ンジスタ】１によって受光し、パルス変換してカウンタ
回路９により、このパルス数を読み取ることによって最
終的に被検出回転体の回転数を知ることができるように
したものである。Sensor circle! A fiber-tip fiber buff is placed behind &6, so the light is received by the light-receiving transistor 1 of the light transmitting/receiving circuit 8, converted into pulses, and the counter circuit 9 reads the number of pulses. This makes it possible to finally know the rotational speed of the rotating body to be detected.
以下に、第２図に基づき、本発明の要部を々す駆動機構
部の詳細を説明する。The details of the drive mechanism, which constitutes the main part of the present invention, will be explained below with reference to FIG.
駆動機構部１は回転軸２力１ベアリング１３ＪＣより支
持され、押えぶた１４にシール材】５を介して気密的に
かつ回転可能に固定されている。回転軸の先端には、回
転板３が固定され、この回転板３の表面外周に複数の磁
石が固定されている。The drive mechanism section 1 is supported by a rotating shaft 2, a force 1, and a bearing 13JC, and is rotatably and airtightly fixed to a presser lid 14 via a sealing material 5. A rotating plate 3 is fixed to the tip of the rotating shaft, and a plurality of magnets are fixed to the outer periphery of the surface of the rotating plate 3.
フレーム本体１６の一方の面には、前記の回転板３及び
磁石４の外径形状と略相似形を々す凹陥部１７が形成さ
れ、との凹陥部１７内で前記磁石４？ｒ有する回転板３
が回転し得るように構成されている。A concave portion 17 is formed on one surface of the frame body 16 and has a substantially similar outer diameter shape to that of the rotating plate 3 and the magnet 4. Rotating plate 3 with r
is configured so that it can rotate.
フレーム本体１６の他方の面にも凹陥部１８が形成され
ている。A concave portion 18 is also formed on the other surface of the frame body 16.
との凹陥部１８内には、回転軸２の軸線と一致させてセ
ンサ円板６が設けられる。すなわち、センサ円板６ば、
センサ軸１９に固定され、このセンサ軸】９の両端が、
フレーム本体１６及び凹陥部】８の口縁部に止ねじ２０
により固定した押え軸柱板２】の間に介在させたピボッ
ト軸受２２゜２２によって支持されている。A sensor disk 6 is provided in the recessed portion 18 so as to coincide with the axis of the rotating shaft 2. That is, the sensor disc 6b,
It is fixed to the sensor shaft 19, and both ends of this sensor shaft]9 are
Frame main body 16 and recess] Set screw 20 at the mouth edge of 8
It is supported by a pivot bearing 22.degree. 22 interposed between presser shaft pillar plates 2 held by
センサ感円板６０回転板３との対向面に鉱、第３図囚に
示すように磁石４に対応する位置に複数の吸着材５が設
けられている。また、センサ円板６の他方の面（センサ
側〕には、第３図＠に示すように光信号の無反射面２２
と、この無反射面２２内め外周方向に等間隔配置で複数
の反射面２３が形成されている。A plurality of adsorbents 5 are provided at positions corresponding to the magnets 4, as shown in FIG. In addition, on the other surface (sensor side) of the sensor disk 6, there is a non-reflective surface 22 for optical signals, as shown in FIG.
A plurality of reflective surfaces 23 are formed at equal intervals in the inner circumferential direction of the non-reflective surface 22.
フレーム本体１６の一方の面には、前記押えぶた】４が
バッキング２４を介して止ねじ′２５にょによシそれぞ
れ気密的に取シ付けられている。The presser foot 4 is airtightly attached to one surface of the frame body 16 via a backing 24 and set screws 25.
センサ固定ぶた２６には、センサ円板６のセンサ側の面
に対向して光センサ２９が設けられる。An optical sensor 29 is provided on the sensor fixing lid 26 so as to face the sensor-side surface of the sensor disc 6 .
すなわち、光センサ２９は、光ファイバ３０がセンサホ
ルダ３】によシ支持され、このホルダ３１が０１Ｊング
３２を介して気密的にセンサ固定ぶ交２６に取り付けら
れる。That is, in the optical sensor 29, an optical fiber 30 is supported by a sensor holder 3], and this holder 31 is airtightly attached to the sensor fixing bridge 26 via an 01J ring 32.
センサホルダ３】は、センサ固定ぶた２６の突出部３４
に設けた穴に挿入され、止ねじ３５により固定されてい
るため、この止ねじ３５ｃ！！！緩めることによって、
光センサ２９の全体會センサ固定ぶた２６から取り外す
ことが可能な構造となっている。The sensor holder 3] is attached to the protrusion 34 of the sensor fixing lid 26.
This set screw 35c! is inserted into the hole provided in the hole and is fixed by the set screw 35! ! ! By loosening the
The entire optical sensor 29 has a structure that can be removed from the sensor fixing lid 26.
着た、光センサ２９は、光ファイバ３０の屈曲を防止す
るためにセンサホルダ３】の後方に複数の曲り止めブッ
シング３６が設けられ、光フアイバコード３７を保護し
ている。In order to prevent the optical fiber 30 from bending, the optical sensor 29 is provided with a plurality of anti-bending bushings 36 at the rear of the sensor holder 3 to protect the optical fiber cord 37.
なお、符号３８はガス封入栓である。そこで、今、ガス
封入栓３８を取り外し、内部［Ｎ２ガス等を充填し、再
びガス封入栓３８を閉じ、ｔた、回転軸２にカップリン
グ等を介して被検出回転体を接続すれば、被検出回転体
の回転に伴い、回転軸２が回転する。この回転軸２の先
端には、回転板３が像り付けられているので共に回転し
、回転板３の磁石４の磁気作用によシセンサ円板６の吸
着材５が吸着され、磁気゛継手となってセンサ円板６が
回転板３と同期して回転する。この回転板３の回転は、
光センサ２９により検出される。すなわち、光ファイバ
３０によって送られた光信号がセンサ円板６の反射面２
３に当って反射し、この反射光を光ファイバ３０を介し
て前述した送受光回路８に帰還させ、カウンタ向路９に
よシ、パルス数をカウントして被検出回転体の回転数を
知ることができる。。In addition, the code|symbol 38 is a gas filling plug. Therefore, if we now remove the gas filling plug 38, fill the inside with N2 gas, etc., close the gas filling plug 38 again, and then connect the rotating body to be detected to the rotating shaft 2 via a coupling or the like. The rotating shaft 2 rotates as the detected rotating body rotates. A rotary plate 3 is imaged on the tip of the rotary shaft 2, so they rotate together, and the adsorbent 5 of the sensor disk 6 is attracted by the magnetic action of the magnet 4 of the rotary plate 3, and the magnetic joint As a result, the sensor disk 6 rotates in synchronization with the rotary plate 3. The rotation of this rotary plate 3 is
It is detected by the optical sensor 29. That is, the optical signal sent by the optical fiber 30 is transmitted to the reflective surface 2 of the sensor disk 6.
3, the reflected light is returned to the above-mentioned light transmitting/receiving circuit 8 via the optical fiber 30, and the number of pulses is counted by the counter path 9 to determine the rotational speed of the rotating body to be detected. be able to. .
本発明は、以上の説明から明らかなように駆動機構部が
気密構造となっているために水中、油中等においても使
用することが可能であり、マ友光センサの先端部も気密
にされた凹陥部内に挿入されているのでほこり等が付着
することが防止され−１た外部との温度差、湿度差等に
よって光フアイバ先端部に露結が生ずることがなく、し
たが？て検出精度を高水準に維持することができる。さ
らに、回転数は光信号のみで検出するので防爆施設等に
適している。As is clear from the above description, the drive mechanism part of the present invention has an airtight structure, so it can be used underwater, in oil, etc., and the tip of the light sensor is also made airtight. Since it is inserted into the recessed part, it prevents dust from adhering to it, and there is no possibility of dew condensation forming on the tip of the optical fiber due to temperature or humidity differences with the outside. detection accuracy can be maintained at a high level. Furthermore, since the rotation speed is detected using only optical signals, it is suitable for explosion-proof facilities.
第１図は、本発明の回転体検出装置の概略構成図、第２
図は、上記検出装置の駆動機構部の断面図、第３図（２
）は、回転板の斜視図、同図（均は、センサ円板の斜視
図である。
２・・・回転軸、３・・・回転板、４・・・磁石、５・
・・吸着材、６・・・センサ円板、７３光フアイノく、
８−・・送受光回路、９・・・カウンタ回路、２９・・
・光センサ。
出願代理人 弁理士 菊 池 五 部
間 山田明信FIG. 1 is a schematic configuration diagram of a rotating body detection device of the present invention, and FIG.
The figure is a cross-sectional view of the drive mechanism section of the detection device, and FIG.
) is a perspective view of the rotary plate, and the same figure (the figure is a perspective view of the sensor disc. 2...Rotating shaft, 3... Rotating plate, 4... Magnet, 5...
...adsorbent, 6...sensor disc, 73 optical fiber,
8-... Light transmitting/receiving circuit, 9... Counter circuit, 29...
・Light sensor. Application agent Patent attorney Gobe Kikuchi Akinobu Yamada
Claims (1)
回転軸と、この回転軸の先端に固定され、表面外周に磁
石を有する回転板と、この回転板に対向配量された吸着
材を有するセンサ円板と、とのセンサ円板の後方に配置
された光信号を伝達する光ファイバと、との光ファイバ
を介して光信号を送受光する送受光回路と、この送受光
回路に結合され、前記センサ円板からの反射光を光パル
スとしてカウントするカウンタ回路とを有することを特
徴とする回転体検出装置。It has a rotating shaft that is coupled to a rotating body to be detected that protrudes from an airtight box, a rotating plate that is fixed to the tip of the rotating shaft and has a magnet on its outer periphery, and an adsorbent disposed opposite to the rotating plate. a sensor disc; an optical fiber for transmitting optical signals disposed behind the sensor disc; a light transmitting/receiving circuit for transmitting and receiving optical signals via the optical fiber; and a counter circuit that counts reflected light from the sensor disk as light pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10208081A JPS582751A (en) | 1981-06-30 | 1981-06-30 | Detecting device for rotating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10208081A JPS582751A (en) | 1981-06-30 | 1981-06-30 | Detecting device for rotating body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS582751A true JPS582751A (en) | 1983-01-08 |
Family
ID=14317791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10208081A Pending JPS582751A (en) | 1981-06-30 | 1981-06-30 | Detecting device for rotating body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS582751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60126704U (en) * | 1984-02-03 | 1985-08-26 | エスエムシ−株式会社 | Cylinder control device with optical sensing position detection mechanism |
| JPH01121855U (en) * | 1988-02-12 | 1989-08-18 |
-
1981
- 1981-06-30 JP JP10208081A patent/JPS582751A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60126704U (en) * | 1984-02-03 | 1985-08-26 | エスエムシ−株式会社 | Cylinder control device with optical sensing position detection mechanism |
| JPH01121855U (en) * | 1988-02-12 | 1989-08-18 |
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