JPS58165300A - Detecting method of rotary pulse in rotating anode x-ray tube - Google Patents

Detecting method of rotary pulse in rotating anode x-ray tube

Info

Publication number
JPS58165300A
JPS58165300A JP4717082A JP4717082A JPS58165300A JP S58165300 A JPS58165300 A JP S58165300A JP 4717082 A JP4717082 A JP 4717082A JP 4717082 A JP4717082 A JP 4717082A JP S58165300 A JPS58165300 A JP S58165300A
Authority
JP
Japan
Prior art keywords
rotor
light
fiber
ray tube
pulse signal
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
JP4717082A
Other languages
Japanese (ja)
Inventor
Osami Matsushita
修己 松下
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4717082A priority Critical patent/JPS58165300A/en
Publication of JPS58165300A publication Critical patent/JPS58165300A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08Electrical details
    • H05G1/66Circuit arrangements for X-ray tubes with target movable relatively to the anode

Landscapes

  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Optical Transform (AREA)
  • X-Ray Techniques (AREA)

Abstract

PURPOSE:To detect a rotary pulse signal corresponding to rotation of a rotor, by projecting light to the rotor through a fiber from a projector and receiving the reflected light to a light receiver again through the fiber. CONSTITUTION:A rotor 9 is sealed by a glass tube 12 and the whole unit of this tube is contained in a housing 13. A cathode 14 is provided to the left side of the rotor 9 and a light reflecting tape 16 is glued to the right end of the rotor 9. A motor stator 15 is provided to the outside of the tube 12. Light from a projector 18 passes through in a fiber 17 and is reflected by a mirror 19 so as to be projected to the rotor 9. The light projected to the rotor 9 is reflected by the tape 16 to return through a light path in the fiber 17 into a light receiver 20. Then a phototransistor in the receiver 20 sensitively responds to generate electromotive force. Accordingly, if the rotor 9 is rotated, one pluse is generated when the light is projected to the tape 16, and a rotaty pulse signal can be obtained synchronously with a rotary speed.

Description

【発明の詳細な説明】 本発明は回転機械の回転パルスを検出する方法に係り、
特にX線管球に好適なように光ファイバを用いた光学式
の回転パルス検出方法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting rotational pulses of a rotating machine,
In particular, the present invention relates to an optical rotating pulse detection method using an optical fiber suitable for an X-ray tube.

回転機械において、回転パルス信号はロータの回転数を
知るためにも必要である。また回転次数分析など振動デ
ータ処理のためにも基本となる信号である。
In rotating machines, the rotation pulse signal is also necessary to know the rotation speed of the rotor. It is also a basic signal for vibration data processing such as rotational order analysis.

その回転パルスを検出する方法として代表的なものは第
1図に示すような二つの方法がある。同図で右側は電磁
ビックによるもので、左側は光学式のものである。
There are two typical methods for detecting the rotational pulses, as shown in FIG. In the figure, the right side is an electromagnetic system, and the left side is an optical system.

第1図において、ロータ1はケーシング架台2に支えら
れていて、このロータ1上には突起3が設けられる。一
方、ケーシング架台2上にピックアップ取付は治具4を
設け、電磁ビック5の先端をロータ1に接近させて固定
する。この状態でロータ1が回転し、突起3が電磁ピッ
クアップ5に対面すると、その瞬間に電磁ピックアップ
5にはパルス状の起電力が発生する。このようにして回
転同期のパルス信号が得られる。
In FIG. 1, a rotor 1 is supported on a casing cradle 2, on which a projection 3 is provided. On the other hand, a jig 4 is provided for mounting the pickup on the casing frame 2, and the tip of the electromagnetic pickup 5 is brought close to the rotor 1 and fixed. When the rotor 1 rotates in this state and the protrusion 3 faces the electromagnetic pickup 5, a pulse-like electromotive force is generated in the electromagnetic pickup 5 at that moment. In this way, a rotationally synchronous pulse signal is obtained.

他方、第1図で、6はロータ1上に貼られた反射テープ
である。そしてこの位置に投光器7よシ光を照らし、そ
の反射光を受光器8で受ける。受光器8の中にはホトニ
ックトランジスタが設けられているので、光が当ったと
き起電力が発生する。
On the other hand, in FIG. 1, 6 is a reflective tape pasted on the rotor 1. A light emitter 7 illuminates this position, and a light receiver 8 receives the reflected light. Since a photonic transistor is provided in the light receiver 8, an electromotive force is generated when it is hit by light.

この光学式の構成において、ロータ回転中に回転同期の
パルス信号が得られる。
In this optical configuration, a rotationally synchronous pulse signal can be obtained while the rotor is rotating.

このようにして回転パルスを検出する方法はあるが、回
転陽極形X線管球には応用することができなかつ九。
Although there are methods for detecting rotational pulses in this way, they cannot be applied to rotating anode X-ray tubes.

X線管球はロータをガラス管で包んだ構造となっている
ので、電磁ピックアップをロータに近接させることがで
きないためである。
This is because the X-ray tube has a structure in which the rotor is wrapped in a glass tube, so the electromagnetic pickup cannot be brought close to the rotor.

また上述の光学式の構成においては、投光器からの光を
ロータに照てることはできるが、ガラス管付近の構造が
複雑でスペースが無い。そのためロータに対面して投光
器と受光器の光路を直線的に設けることが困難であった
Further, in the above-mentioned optical configuration, although it is possible to illuminate the rotor with light from the projector, the structure near the glass tube is complicated and there is no space. Therefore, it has been difficult to provide a linear optical path between the emitter and the receiver facing the rotor.

このような理由の他に、X線に対する被曝の問題及びX
線発生のため高電圧がかかつている理由から絶縁の問題
がある。
In addition to these reasons, there is also the issue of exposure to X-rays and
There is an insulation problem because of the high voltage applied to the line.

このような理由からX線管球のロータの回転パルスを検
出することは実績されてい々かった。そし?X線管球a
−夕の正=な回転数は不明のまま運転されてきた・  
 :、1′1、。
For these reasons, detection of rotational pulses of the rotor of an X-ray tube has been successful. stop? X-ray tube a
-Evening positive = has been operated without knowing the correct rotation speed.
:,1'1,.

本発明の目的は、回転陽極形X線管球において、ロータ
の回転に同期した回転パルス信号を得るための、回転パ
ルス検出方法を提供することにある。
An object of the present invention is to provide a rotational pulse detection method for obtaining a rotational pulse signal synchronized with the rotation of a rotor in a rotating anode type X-ray tube.

本発明の特徴とするところは、回転@補形X線管におい
て、投光器よりの光をファイバを通してロータに当てて
、その反射光を再びファイバを通して受光器で受けるよ
うにすることにより、ロータの回転に対応した回転パル
ス信号を検出できるようにしたものである。
A feature of the present invention is that in a rotating@complementary X-ray tube, the light from the projector is directed to the rotor through a fiber, and the reflected light is received by the receiver through the fiber, thereby causing the rotor to rotate. The rotation pulse signal corresponding to the rotation pulse signal can be detected.

以下、本発明の一実施例を第2図により説明する。An embodiment of the present invention will be described below with reference to FIG.

第2図の回転陽極形X線管球において、ロータ9は球軸
受10を介して固定軸11に支持されている。ロータ9
はガラス管12によって封止されている。この管球全体
はハウペ13の中に格納される。ロータ9の左側には@
極14が設けられ、15が駆動用のモータステータであ
る。またロータ9の右端には光反射用のテープ16が貼
られる。
In the rotating anode type X-ray tube shown in FIG. 2, a rotor 9 is supported by a fixed shaft 11 via a ball bearing 10. As shown in FIG. Rotor 9
is sealed by a glass tube 12. The entire tube is stored in the haupe 13. On the left side of rotor 9 @
A pole 14 is provided, and 15 is a motor stator for driving. Further, a light reflecting tape 16 is attached to the right end of the rotor 9.

ガラス管12の外まわシでハウベ13の内側にはモータ
ステータ11゛5など多くの部品があシロータ1までの
直線的光路を設けることが困難である。
There are many parts such as the motor stator 11'5 on the outside of the glass tube 12 and inside the Haube 13, making it difficult to provide a straight optical path to the rotor 1.

−。−.

よってそこにファイしく17を用いた光学系を設ける。Therefore, an optical system using 17 is installed there.

投光器18よシ光を出し、ファイバー7内を通し、ミラ
ー!9で光がロータ9にあ走るように反射させる。ロー
タ9に当った光は反射テープ16によシ反射し、ファイ
バ17内の光路を戻って受光器20に入る。そして受光
器20内のホトニックトランジスタが感応し起動力が発
生する。
Emits light from the floodlight 18, passes through the fiber 7, and mirrors! At step 9, the light is reflected to the rotor 9. The light striking the rotor 9 is reflected by the reflective tape 16 and returns along the optical path within the fiber 17 to enter the light receiver 20. Then, the photonic transistor in the light receiver 20 responds and a starting force is generated.

このような構成において、ロータ9が回転すると反射テ
ープ161c光が当ったときに1パルスが発生するので
、回転数に同期した回転パルス信号が得られる。
In such a configuration, when the rotor 9 rotates, one pulse is generated when the light from the reflective tape 161c hits the rotor 9, so that a rotation pulse signal synchronized with the rotation speed can be obtained.

X#1lFi通常連続的に数パルス発生し、そのあと少
体止し、再び数パルスのX線がでる。この繰返しのクー
ケンスで運転されている。このため、X線が発生したと
きにその光が、ファイバ17内の光路を走シ受光器20
が感応するような誤動作の可能性がある。このため実際
には、XIIIが照射されているときに同時に回転パル
スを検出することはむずかしい。よってXaの少体止の
タイミングtmつて回転パルスを検出するように回転パ
ルス検出のシーケンスを組む必要がある。
X#1lFi Normally, several pulses are generated continuously, then there is a short pause, and several pulses of X-rays are emitted again. It is driven by this repeated sequence. Therefore, when X-rays are generated, the light travels along the optical path within the fiber 17 and reaches the optical receiver 20.
There is a possibility of a malfunction that may cause a reaction. Therefore, in reality, it is difficult to detect rotational pulses at the same time when XIII is being irradiated. Therefore, it is necessary to set up a rotation pulse detection sequence so that the rotation pulse is detected at the timing tm of Xa's small body stop.

ファイバ17内体は石英などあ絶縁物で作れるので、絶
縁が不良のため、電流がパルス検出器を通じてハウベ1
3に流れるようなことはない。
The inner body of the fiber 17 can be made of an insulating material such as quartz, so if the insulation is poor, the current will pass through the pulse detector to the Haube 1.
There is no flow to 3.

本発明によれば、ロータの回転に対応した回転パルス信
号が検出できるので、X線管の実働中の回転数を正確に
把握することができるようになる。
According to the present invention, since a rotation pulse signal corresponding to the rotation of the rotor can be detected, the number of rotations of the X-ray tube during actual operation can be accurately determined.

よってロータを低振動の安全な回転数域で一定に回わす
ことができ、ロータが共振点上で回転するような危険を
防止することが可能である。引いては回転系の長寿命化
につながる。
Therefore, the rotor can be rotated constantly in a safe rotation speed range with low vibration, and it is possible to prevent the rotor from rotating on a resonance point. This in turn leads to longer life of the rotating system.

ま九この回転パルス信号を用いて、ハウペの振動をデー
タ処理(例えば回転次数分析)することが可能で、ロー
タ系の異常を早期に発見するため振動モニタに利用でき
る。
Using this rotation pulse signal, it is possible to perform data processing on the vibration of the Haupe (for example, rotational order analysis), and it can be used for vibration monitoring to detect abnormalities in the rotor system at an early stage.

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

第1図は従来の回転パルス検出方法を示す縦断面図、第
2図は本発明の方法を実施する回転陽極形X1III管
の縦断面図である。 9・・・E’−1,16・・・反射テープ、17・・・
ファイバ、′FJZ   図
FIG. 1 is a longitudinal sectional view showing a conventional rotating pulse detection method, and FIG. 2 is a longitudinal sectional view of a rotating anode type X1III tube for implementing the method of the present invention. 9...E'-1, 16...Reflective tape, 17...
Fiber, 'FJZ diagram

Claims (1)

【特許請求の範囲】[Claims] 1、回転陽極形X線管において、投光器よりの光を7ア
イパを通してロータKfiてて、その反射光を再びファ
イバを通して受光器で受けるようにすることによりロー
タの回転に対応した回転パルス信号を検出できるように
したことを特徴とする回転単極形X線管の回転パルス検
出方法。
1. In a rotating anode type X-ray tube, the light from the emitter is passed through the 7-eyeper to the rotor Kfi, and the reflected light is passed through the fiber again and received by the receiver, thereby detecting a rotation pulse signal corresponding to the rotation of the rotor. A rotational pulse detection method for a rotating monopolar X-ray tube, characterized in that:
JP4717082A 1982-03-26 1982-03-26 Detecting method of rotary pulse in rotating anode x-ray tube Pending JPS58165300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4717082A JPS58165300A (en) 1982-03-26 1982-03-26 Detecting method of rotary pulse in rotating anode x-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4717082A JPS58165300A (en) 1982-03-26 1982-03-26 Detecting method of rotary pulse in rotating anode x-ray tube

Publications (1)

Publication Number Publication Date
JPS58165300A true JPS58165300A (en) 1983-09-30

Family

ID=12767586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4717082A Pending JPS58165300A (en) 1982-03-26 1982-03-26 Detecting method of rotary pulse in rotating anode x-ray tube

Country Status (1)

Country Link
JP (1) JPS58165300A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154499A (en) * 1984-01-20 1985-08-14 Shimadzu Corp Driving device for rotating anode x-ray tube
EP1132943A2 (en) * 2000-03-08 2001-09-12 Marconi Medical Systems, Inc. Detection system for x-ray tubes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154499A (en) * 1984-01-20 1985-08-14 Shimadzu Corp Driving device for rotating anode x-ray tube
EP1132943A2 (en) * 2000-03-08 2001-09-12 Marconi Medical Systems, Inc. Detection system for x-ray tubes
EP1132943A3 (en) * 2000-03-08 2003-10-22 Philips Medical Systems (Cleveland), Inc. Detection system for x-ray tubes

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