JPH0878185A - Method for detecting replacing time of x-ray tube and device used therefor - Google Patents
Method for detecting replacing time of x-ray tube and device used thereforInfo
- Publication number
- JPH0878185A JPH0878185A JP23421594A JP23421594A JPH0878185A JP H0878185 A JPH0878185 A JP H0878185A JP 23421594 A JP23421594 A JP 23421594A JP 23421594 A JP23421594 A JP 23421594A JP H0878185 A JPH0878185 A JP H0878185A
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- filament
- detecting
- voltage
- ray
- 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
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- X-Ray Techniques (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｘ線分析装置に用いら
れるＸ線管の交換時期検知方法およびこれに用いる装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting the replacement time of an X-ray tube used in an X-ray analysis apparatus and an apparatus used therefor.
【０００２】[0002]
【従来の技術】Ｘ線分析装置に用いられるＸ線管のＸ線
管製造メーカーによる保証寿命は５００時間から１００
０時間程度であるが、実際には連続使用してもこの程度
で使用できなくなることはない。そこで従来は、Ｘ線管
を組み込んだＸ線分析装置のメーカーが過去の使用実績
等から１年間から３年間程度の範囲内でＸ線管の寿命を
保証している。また、標準試料を測定して、標準試料か
ら発生するＸ線強度の低下等からＸ線管の寿命を推定す
ることもある。2. Description of the Related Art The guarantee life of an X-ray tube used in an X-ray analyzer is 500 hours to 100 hours by an X-ray tube manufacturer.
Although it is about 0 hours, in actuality, even if it is continuously used, it does not become unusable at this level. Therefore, conventionally, a manufacturer of an X-ray analysis device incorporating an X-ray tube guarantees the life of the X-ray tube within a range of about 1 to 3 years based on past usage records and the like. Further, the standard sample may be measured and the life of the X-ray tube may be estimated from the decrease in the intensity of the X-ray generated from the standard sample.
【０００３】[0003]
【発明が解決しようとする課題】ところが、実際のＸ線
管の交換時期は個々のＸ線管の特性や使用状況によって
ばらついており、同種のすべてのＸ線管について１年間
から３年間程度の範囲内で寿命を保証することは適切で
ない。また、標準試料から発生するＸ線強度の低下はＸ
線管以外の要因、たとえば電源電圧の変動等で起こる場
合もあるので、それからＸ線管の寿命を推定することは
正確でない。However, the actual replacement time of an X-ray tube varies depending on the characteristics and usage of each X-ray tube, and it takes about 1 to 3 years for all X-ray tubes of the same type. It is not appropriate to guarantee the lifetime within the range. In addition, the decrease in X-ray intensity generated from the standard sample is X
Since it may occur due to factors other than the X-ray tube, such as fluctuations in the power supply voltage, it is not accurate to estimate the life of the X-ray tube.
【０００４】本発明は、前記従来の問題に鑑みてなされ
たもので、Ｘ線分析装置に用いられるＸ線管の交換時期
を、直接的にかつ正確に検知する方法およびこれに用い
る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 conventional problems, and provides a method for directly and accurately detecting the replacement time of an X-ray tube used in an X-ray analysis apparatus, and an apparatus used therefor. The purpose is to do.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に、請求項１の方法は、Ｘ線分析装置に用いられるＸ線
管の交換時期を検知する方法であって、Ｘ線管のフィラ
メントに印加される電圧と電流の少なくとも一方を検出
し、前記検出値が基準値に対して一定の割合を越えて変
化した場合に、Ｘ線管が交換時期であることを警告す
る。In order to achieve the above object, the method of claim 1 is a method for detecting the replacement time of an X-ray tube used in an X-ray analysis apparatus, the filament of the X-ray tube being used. At least one of a voltage and a current applied to the X-ray tube is detected, and when the detected value changes by more than a predetermined ratio with respect to the reference value, a warning that the X-ray tube is due to be replaced is issued.
【０００６】また、請求項２の装置は、Ｘ線分析装置に
用いられるＸ線管の交換時期を検知する装置であって、
Ｘ線管のフィラメントに印加される電圧と電流の少なく
とも一方を検出する検出手段と、前記検出値が基準値に
対して一定の割合を越えて変化した場合に、Ｘ線管が交
換時期であることを警告する警報出力手段とを備えてい
る。The apparatus of claim 2 is an apparatus for detecting the replacement time of an X-ray tube used in an X-ray analysis apparatus,
The detecting means for detecting at least one of the voltage and the current applied to the filament of the X-ray tube, and the X-ray tube is the time to replace when the detected value changes by more than a certain ratio with respect to the reference value. And an alarm output means for warning that.
【０００７】請求項１の方法または請求項２の装置によ
れば、Ｘ線管のフィラメントに印加される電圧と電流の
少なくとも一方を検出し、Ｘ線管の交換時期に直接関係
する前記検出値の基準値からの変化を測定するので、Ｘ
線管の交換時期を直接的にかつ正確に検知できる。よっ
て、まだ十分寿命のあるＸ線管を無駄に交換したり、寿
命推定のために不確実な測定を繰り返したり、分析中に
突然Ｘ線管の寿命が尽きたりすることがなくなり、最終
的にＸ線分析の経済的、時間的効率が向上する。According to the method of claim 1 or the apparatus of claim 2, at least one of the voltage and the current applied to the filament of the X-ray tube is detected, and the detected value directly related to the replacement time of the X-ray tube. Since the change from the standard value of
It is possible to directly and accurately detect the replacement time of the wire tube. Therefore, it is possible to prevent unnecessary replacement of an X-ray tube with a sufficient life, repeated uncertain measurement for life estimation, and sudden end of life of the X-ray tube during analysis. The economic and time efficiency of X-ray analysis is improved.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面にしたがって説
明する。まず、本発明の原理について説明する。Ｘ線管
に印加される電圧と電流が一定になるように制御されて
いる装置において、Ｘ線管のタングステンからなるフィ
ラメントに印加される電圧と時間との関係を、図２に示
す。基準値Ｅ0 である初期値から２０％を越えて変化
（増加）したあたりＡで、Ｘ線管の寿命の要因であるフ
ィラメントの蒸発による断線が起こっている。Embodiments of the present invention will be described below with reference to the drawings. First, the principle of the present invention will be described. FIG. 2 shows the relationship between the voltage applied to the tungsten filament of the X-ray tube and the time in an apparatus in which the voltage and current applied to the X-ray tube are controlled to be constant. When the change (increase) exceeds 20% from the initial value, which is the reference value E 0, at A, the disconnection due to evaporation of the filament, which is a factor of the life of the X-ray tube, occurs.
【０００９】同様に、Ｘ線管のフィラメントに印加され
る電流と時間との関係を、図３に示す。基準値Ｉ0 であ
る初期値から２０％を越えて変化（減少）したあたりＢ
で、Ｘ線管の寿命の要因であるフィラメントの蒸発によ
る断線が起こっている。本発明では、Ｘ線管のフィラメ
ントに印加される電圧と電流の少なくとも一方を検出
し、その検出値が基準値の２０％を越えて変化する現象
を測定し、前記フィラメントの蒸発による断線が近いこ
とを警告する。ここで、２０％という数値はタンタルか
らなるフィラメントにおいても同程度であり、より安全
を見越して１５％の変化で警告を発してもよいし、より
長時間の使用のために２５％としてもよい。Similarly, the relationship between the current applied to the filament of the X-ray tube and time is shown in FIG. Around the point where the reference value I 0 changes (decreases) by more than 20% from the initial value B
Therefore, disconnection occurs due to evaporation of the filament, which is a factor of the life of the X-ray tube. In the present invention, at least one of the voltage and current applied to the filament of the X-ray tube is detected, and the phenomenon in which the detected value changes by more than 20% of the reference value is measured, and disconnection due to evaporation of the filament is close. Warn that. Here, the numerical value of 20% is about the same for a filament made of tantalum, and a warning may be issued with a change of 15% in consideration of safety, or may be set to 25% for longer use. .
【００１０】次に、本実施例の構成について説明する。
図１に本発明による装置の実施例のブロック図を示す。
図１において、トランスからなる高電圧発生部５は、ダ
イオード１８，１９とコンデンサ２０，２１からなる平
滑回路２２に接続され、さらに抵抗体２３を介して、Ｘ
線管１１のターゲット１２に接続されている。平滑回路
２２に並列に接続された抵抗体２４，２５からなる管電
圧検出部２と、管電圧用基準電圧発生部１とは、第１誤
差増幅部３の正負の入力側にそれぞれ接続され、その出
力側は、高電圧発生部５の１次側に接続された管電圧制
御部４に接続されている。Next, the structure of this embodiment will be described.
FIG. 1 shows a block diagram of an embodiment of the device according to the invention.
In FIG. 1, the high voltage generating unit 5 including a transformer is connected to a smoothing circuit 22 including diodes 18 and 19 and capacitors 20 and 21, and further connected via a resistor 23 to X
It is connected to the target 12 of the wire tube 11. The tube voltage detection unit 2 including the resistors 24 and 25 connected in parallel to the smoothing circuit 22 and the tube voltage reference voltage generation unit 1 are connected to the positive and negative input sides of the first error amplification unit 3, respectively. The output side thereof is connected to the tube voltage control section 4 connected to the primary side of the high voltage generation section 5.
【００１１】Ｘ線管１１のフィラメント１３にはフィラ
メントトランス１０の２次側が接続され、その１次側に
はフィラメント電流制御部９が接続されている。フィラ
メント１３に接続された抵抗体からなる管電流検出部７
と、管電流用基準電圧発生部６とは、第２誤差増幅部８
の正負の入力側に接続され、その出力側はフィラメント
電流制御部９に接続されている。フィラメント電圧検出
手段１４の入力側はフィラメント１３に並列に接続さ
れ、出力側は判定部１６に接続されている。フィラメン
ト電流検出手段１５の入力側にはフィラメント１３の電
流を検知するためのコイル２６が接続され、出力側は判
定部１６に接続されている。判定部１６の出力側は警報
出力手段１７に接続されている。The secondary side of the filament transformer 10 is connected to the filament 13 of the X-ray tube 11, and the filament current controller 9 is connected to the primary side thereof. Tube current detector 7 consisting of a resistor connected to the filament 13
And the reference voltage generator 6 for tube current, the second error amplifier 8
Is connected to the positive and negative input sides, and the output side is connected to the filament current controller 9. The input side of the filament voltage detecting means 14 is connected in parallel to the filament 13, and the output side thereof is connected to the judging section 16. The coil 26 for detecting the current of the filament 13 is connected to the input side of the filament current detection means 15, and the output side is connected to the determination unit 16. The output side of the determination unit 16 is connected to the alarm output means 17.
【００１２】次に、本実施例の動作について説明する。
図１において、管電圧用基準電圧発生部１と管電圧検出
部２からの出力を入力とする第１誤差増幅部３からの出
力によって、管電圧制御部４が高電圧発生部５で発生さ
せる管電圧、すなわちＸ線管１１のターゲット１２とフ
ィラメント１３間に印加される電圧を制御する。また、
管電流用基準電圧発生部６と管電流検出部７からの出力
を入力とする第２誤差増幅部８からの出力によって、フ
ィラメント電流制御部９がフィラメントトランス１０を
介してフィラメント電流を制御する。Next, the operation of this embodiment will be described.
In FIG. 1, the tube voltage control section 4 causes the high voltage generation section 5 to generate by the output from the first error amplification section 3 which receives the outputs from the tube voltage reference voltage generation section 1 and the tube voltage detection section 2. The tube voltage, that is, the voltage applied between the target 12 and the filament 13 of the X-ray tube 11 is controlled. Also,
The filament current controller 9 controls the filament current via the filament transformer 10 by the output from the second error amplifier 8 which receives the outputs from the tube current reference voltage generator 6 and the tube current detector 7.
【００１３】フィラメント電圧検出手段１４はＸ線管１
１のフィラメント１３に印加される電圧を検出し、フィ
ラメント電流検出手段１５はＸ線管１１のフィラメント
１３に印加される電流を検出する。判定部１６は、前記
検出値の少なくとも一方が基準値である初期値から２０
％を越えて変化した場合に警報出力手段１７に信号を出
力し、ランプ、ブザー等である警報出力手段１７は、
音、光等で警報を発し、Ｘ線管１１の交換を促す。The filament voltage detecting means 14 is the X-ray tube 1.
The filament current detector 15 detects the voltage applied to the filament 13 of No. 1 and the current applied to the filament 13 of the X-ray tube 11. The determination unit 16 determines that at least one of the detected values is 20 from the initial value which is the reference value.
When the change exceeds 0.1%, a signal is output to the alarm output means 17, and the alarm output means 17 such as a lamp and a buzzer
An alarm is issued by sound, light, etc. to prompt replacement of the X-ray tube 11.
【００１４】本実施例によれば、Ｘ線管１１のフィラメ
ント１３に印加される電圧と電流を検出し、Ｘ線管１１
の交換時期に直接関係する前記検出値の基準値からの変
化を測定するので、Ｘ線管１１の交換時期を直接的にか
つ正確に検知できる。ここで、本実施例ではより厳密な
測定のためにフィラメント電圧検出手段１４とフィラメ
ント電流検出手段１５を両方備えて、フィラメント１３
に印加される電圧と電流の両方を検出したが、どちらか
一方のみでもよい。According to this embodiment, the voltage and current applied to the filament 13 of the X-ray tube 11 are detected, and the X-ray tube 11 is detected.
Since the change in the detected value from the reference value, which is directly related to the replacement time, is measured, the replacement time of the X-ray tube 11 can be directly and accurately detected. Here, in this embodiment, both the filament voltage detecting means 14 and the filament current detecting means 15 are provided for more precise measurement, and the filament 13
Although both the voltage and the current applied to the sensor are detected, only one of them may be detected.
【図１】本発明による装置の実施例のブロック図であ
る。FIG. 1 is a block diagram of an embodiment of an apparatus according to the present invention.
【図２】Ｘ線管のフィラメントに印加される電圧と時間
との関係を示す図である。FIG. 2 is a diagram showing a relationship between a voltage applied to a filament of an X-ray tube and time.
【図３】Ｘ線管のフィラメントに印加される電流と時間
との関係を示す図である。FIG. 3 is a diagram showing a relationship between a current applied to a filament of an X-ray tube and time.
１１…Ｘ線管、１３…フィラメント、１４…フィラメン
ト電圧検出手段、１５…フィラメント電流検出手段、１
７…警報出力手段。11 ... X-ray tube, 13 ... Filament, 14 ... Filament voltage detecting means, 15 ... Filament current detecting means, 1
7 ... Alarm output means.
Claims (2)
時期を検知する方法であって、 Ｘ線管のフィラメントに印加される電圧と電流の少なく
とも一方を検出し、 前記検出値が基準値に対して一定の割合を越えて変化し
た場合に、Ｘ線管が交換時期であることを警告するＸ線
管の交換時期検知方法。1. A method for detecting a replacement time of an X-ray tube used in an X-ray analysis apparatus, comprising detecting at least one of a voltage and a current applied to a filament of the X-ray tube, wherein the detected value is a reference. A method for detecting the replacement time of an X-ray tube, which warns that the X-ray tube is due for replacement when the value changes beyond a certain ratio.
時期を検知する装置であって、 Ｘ線管のフィラメントに印加される電圧と電流の少なく
とも一方を検出する検出手段と、 前記検出値が基準値に対して一定の割合を越えて変化し
た場合に、Ｘ線管が交換時期であることを警告する警報
出力手段とを備えたＸ線管の交換時期検知装置。2. An apparatus for detecting a replacement time of an X-ray tube used in an X-ray analysis apparatus, comprising: detecting means for detecting at least one of a voltage and a current applied to a filament of the X-ray tube; An X-ray tube replacement timing detection device, comprising: an alarm output unit that warns that the X-ray tube is due for replacement when the value changes by more than a certain ratio with respect to a reference value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23421594A JPH0878185A (en) | 1994-09-02 | 1994-09-02 | Method for detecting replacing time of x-ray tube and device used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23421594A JPH0878185A (en) | 1994-09-02 | 1994-09-02 | Method for detecting replacing time of x-ray tube and device used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0878185A true JPH0878185A (en) | 1996-03-22 |
Family
ID=16967505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23421594A Pending JPH0878185A (en) | 1994-09-02 | 1994-09-02 | Method for detecting replacing time of x-ray tube and device used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0878185A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002289396A (en) * | 2001-03-26 | 2002-10-04 | Hitachi Medical Corp | X-ray apparatus |
| JP2003051397A (en) * | 2001-08-06 | 2003-02-21 | Toshiba Corp | X-ray image diagnostic device |
| JP2007242287A (en) * | 2006-03-06 | 2007-09-20 | Nagoya Electric Works Co Ltd | Diagnostic equipment and diagnostic method for x-ray output device |
| JP2008077883A (en) * | 2006-09-19 | 2008-04-03 | Shimadzu Corp | X-ray high-voltage device |
| JP2013251121A (en) * | 2012-05-31 | 2013-12-12 | Anritsu Sanki System Co Ltd | X-ray inspection apparatus |
| JP2014107158A (en) * | 2012-11-28 | 2014-06-09 | Canon Inc | Radiation generator |
| JP2015092439A (en) * | 2013-11-08 | 2015-05-14 | 株式会社島津製作所 | X-ray generator and x-ray spectroscopic analyzer |
| JPWO2020179111A1 (en) * | 2019-03-06 | 2021-12-09 | 株式会社島津製作所 | Analytical instrument parts management system and program |
-
1994
- 1994-09-02 JP JP23421594A patent/JPH0878185A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002289396A (en) * | 2001-03-26 | 2002-10-04 | Hitachi Medical Corp | X-ray apparatus |
| JP2003051397A (en) * | 2001-08-06 | 2003-02-21 | Toshiba Corp | X-ray image diagnostic device |
| JP2007242287A (en) * | 2006-03-06 | 2007-09-20 | Nagoya Electric Works Co Ltd | Diagnostic equipment and diagnostic method for x-ray output device |
| JP2008077883A (en) * | 2006-09-19 | 2008-04-03 | Shimadzu Corp | X-ray high-voltage device |
| JP2013251121A (en) * | 2012-05-31 | 2013-12-12 | Anritsu Sanki System Co Ltd | X-ray inspection apparatus |
| JP2014107158A (en) * | 2012-11-28 | 2014-06-09 | Canon Inc | Radiation generator |
| JP2015092439A (en) * | 2013-11-08 | 2015-05-14 | 株式会社島津製作所 | X-ray generator and x-ray spectroscopic analyzer |
| JPWO2020179111A1 (en) * | 2019-03-06 | 2021-12-09 | 株式会社島津製作所 | Analytical instrument parts management system and program |
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