JPS58196430A - Radiation thermometer - Google Patents
Radiation thermometerInfo
- Publication number
- JPS58196430A JPS58196430A JP8118282A JP8118282A JPS58196430A JP S58196430 A JPS58196430 A JP S58196430A JP 8118282 A JP8118282 A JP 8118282A JP 8118282 A JP8118282 A JP 8118282A JP S58196430 A JPS58196430 A JP S58196430A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- fiber
- infrared
- optical fiber
- same
- 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.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims description 28
- 239000000835 fiber Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002834 transmittance Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
Abstract
Description
【発明の詳細な説明】
本発明は、被測温体の放射する赤外線を赤外光ファイバ
ーで検出器に導ひき、該赤外光から被測温体の温度を測
定するようにした放射温度計に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a radiation thermometer that measures the temperature of a temperature-measuring object by guiding infrared rays emitted by a temperature-measuring object to a detector using an infrared optical fiber. Regarding.
この種の温度計においては正確な温度測定を行なう上で
赤外光ファイバーの透過率及びファイバー自体が放射す
る輻射エネルギーが問題になる。In this type of thermometer, the transmittance of the infrared optical fiber and the radiant energy emitted by the fiber itself pose problems in accurately measuring temperature.
即ち、周囲温度が変化すると、赤外光ファイバーの透過
率及び該ファイバー自体の赤外線輻射強度が変動し、こ
れが誤差要因となるのである０特に被測温体の温度が低
い場合は、測温体の輻射エネルギーに対する前記変動量
が無視できず、そのため大きな測定誤差となって表われ
る場合がある。In other words, when the ambient temperature changes, the transmittance of the infrared optical fiber and the infrared radiation intensity of the fiber itself fluctuate, which causes errors. Especially when the temperature of the object to be measured is low, The amount of variation with respect to the radiant energy cannot be ignored, and therefore may appear as a large measurement error.
このような誤差を防ぐ手法としてファイバー周囲を温度
コントロールすることが考えられるが、高価で大嵩な温
調装置が必要となるし、ファイバーが長い場合は良好な
温度コン）ロールが困難である等という欠点がある。One possible method to prevent such errors is to control the temperature around the fiber, but this requires an expensive and bulky temperature control device, and if the fiber is long, it is difficult to properly control the temperature. There is a drawback.
本発明はかかる点にあって、赤外光ファイバーの赤外線
輻射強度の温度による変動を簡単な構成で硲実に補償し
得る新規、有用な一手段を提供するものである。In view of this, the present invention provides a new and useful means that can accurately compensate for temperature-related fluctuations in the infrared radiation intensity of an infrared optical fiber with a simple configuration.
面して、本発明は被測温体の放射する赤外光を赤外光フ
ァイバーで検出器に導ひき、該赤外光から被測温体の温
度を測定するようにした放射温度街において、被測温体
と検出器との間に前記赤外光ファイバーと同−又は同一
特性を有する温度補償用の赤外光ファイバーを別途設け
たことを要旨とする。On the other hand, the present invention provides a radiation temperature sensor in which infrared light emitted by a temperature-measuring object is guided to a detector using an infrared optical fiber, and the temperature of the temperature-measuring object is measured from the infrared light. The gist is that an infrared optical fiber for temperature compensation having the same or the same characteristics as the infrared optical fiber is separately provided between the object to be measured and the detector.
以下、図面に基づき本発明の詳細な説明する。Hereinafter, the present invention will be described in detail based on the drawings.
図中゛、１は被測温体、２は該被測温体１の放射する赤
外線を検出器例えば焦電検出器３に導びく赤外光ファイ
バー、４はこの赤外光ファイバー２を温度補償するため
の温度補償用赤外光ファイバー、５は該ファイバー４か
ら送出される赤外線を検出する検出器である。In the figure, 1 is a temperature-measuring object, 2 is an infrared optical fiber that guides infrared rays emitted by the temperature-measuring object 1 to a detector, such as a pyroelectric detector 3, and 4 is a temperature-compensating infrared optical fiber 2. A temperature-compensating infrared optical fiber 5 is used to detect the infrared rays emitted from the fiber 4.
前記温度補償用赤外光ファイバ・−４は赤外光ファイバ
ニ２と同一のものを用いている。即ち、少なくともファ
イバーの種類が同一である。さらに、同一の温度影曽を
受けるようにできるだけ前記ファイバー２と４を近接さ
せて設けることがのぞましい。このように同一のものを
用いれば、周囲温度の影曽による赤外線輻射強度の変動
が両方のファイバー２，４に同様にあられれるから、検
出器３．５の出力信号を減算等処理することにより確実
に温度補償できる。但し、赤外光ファイバー４は一方の
ファイバー２と同一のものでなくても同一の特性を有す
るものを用いることもできる。特性が同一であれば温度
による透過率や赤外線輻射強度の変動は同様にあられれ
るから、同一のファイバーを用いた場合と同様にして温
度補償できるからである。The temperature compensating infrared optical fiber -4 is the same as the infrared optical fiber 2. That is, at least the types of fibers are the same. Furthermore, it is desirable that the fibers 2 and 4 be provided as close as possible so that they are exposed to the same temperature influence. If the same fibers are used in this way, fluctuations in the infrared radiation intensity due to the influence of the ambient temperature will be applied to both fibers 2 and 4 in the same way, so by processing the output signal of the detector 3.5 by subtraction etc. Temperature compensation can be achieved reliably. However, the infrared optical fiber 4 does not have to be the same as one of the fibers 2 and may have the same characteristics. This is because if the characteristics are the same, the transmittance and infrared radiation intensity will change in the same way due to temperature, so temperature compensation can be performed in the same way as when using the same fiber.
温度補償用赤外光７アイパー４として赤外光ファイバー
２と同−又は同一の特性を有するものを用いて温度補償
を行なうに際しては、温度補償用赤外光ファイバー４の
一端に所定強度の赤外線を照射するか、或いは該ファイ
バー一端を光遮蔽体で閉鎖して盲にするかいずれかの態
様で実施することができる。図示例では、温度補償用赤
外光ファイバー４の一端に盲栓６゛を設けることによっ
て後者の態様で実施している。Infrared light for temperature compensation 7 When performing temperature compensation using an eyeper 4 having the same or the same characteristics as the infrared optical fiber 2, one end of the infrared optical fiber 4 for temperature compensation is irradiated with infrared rays of a predetermined intensity. Alternatively, one end of the fiber may be closed with a light shield to make it blind. In the illustrated example, the latter mode is implemented by providing a blind plug 6' at one end of the temperature compensating infrared optical fiber 4.
尚、図中７は被測温体１の放射する赤外線を集光して赤
外光ファイバー２の端面に照射するための窓、８は２つ
の検出器３．５の出力を減算等処理する演算回路である
。In the figure, 7 is a window for condensing the infrared rays emitted by the temperature measuring object 1 and irradiating it onto the end face of the infrared optical fiber 2, and 8 is a calculation for subtracting the outputs of the two detectors 3.5. It is a circuit.
本発明に係る放射温度計は以上説明した如く、被測温体
と検出器の間に設ける赤外光ファイバーと同−又は同一
特性を有する温度補償用赤外光ファイバーを別途設けた
ものであるから次のような効果がある。As explained above, the radiation thermometer according to the present invention is separately provided with an infrared optical fiber for temperature compensation having the same or the same characteristics as the infrared optical fiber provided between the object to be measured and the detector. There is an effect like.
■ 前記赤外光ファイバー２の透過率赤外線輻射強度が
、周囲温度の影春をうけて変動しても、後者の温度補償
用赤外光ファイバー４も同様に変動するので、前者の７
アイパーの変動を後者のファイバーによって補償するこ
とができる。従って被測温体が低温のため放射赤外線量
が少ない場合であっても測定誤差を少なく測定すること
ができる。■ Transmittance of the infrared optical fiber 2 Even if the infrared radiation intensity changes due to the influence of the ambient temperature, the latter temperature-compensating infrared optical fiber 4 also changes in the same way.
Eyeper variations can be compensated for by the latter fiber. Therefore, even if the temperature of the object to be measured is low temperature and the amount of infrared rays emitted is small, measurement can be performed with less measurement error.
■ 前者のファイバー周囲を温度コントロールするとい
う面倒で大嵩且つ高価な手段を採る必要がなくなるし、
またファイバーの長さに関係なく、殊にファイバーが長
さ方向に温度分布を生じていてもその温度分布による透
過率等の変動をも確実に補償することができる。
−■ There is no need to take the troublesome, bulky, and expensive method of controlling the temperature around the fiber;
Furthermore, regardless of the length of the fiber, even if the fiber has a temperature distribution in its length direction, it is possible to reliably compensate for variations in transmittance, etc. due to the temperature distribution.
−
図は本発明の一実施例を示す全体構成図である。
１・・・被測温体、２・・・赤外光ファイバー、３・・
・検出器、４・・・温度補償用赤外光ファイバー。
自発手続補正書
昭和５７年７月１７日
昭和５７年 特 許 願第８１１８２ 号２、発明の名
称 放射温度計
５、 補正命令の日付
６、 補正により増加する発明の数
７、補正の対象
明細書の発明の詳細な説明
（１）明細書第２頁３行目の「ファイバーの透過率及び
」を削除する。
（２）同第２頁６行目の「の透過〜強度」をｒ自体が放
射する赤外線輻射エネルギーの強度」に訂正する。
（３）同第２頁１７行目及び第３頁末行目の「強度」を
夫々、「エネルギーの強度」に訂正する。
（４）同第４頁６行目の「透過率や赤外線輻射」を「赤
外線輻射エネルギーの」に訂正する。
（５）同第５頁８行目の「透過率赤外線輻射」を「赤外
線輻射エネルギーの」に訂正する。
（６）同第５頁１９行目の「透過率等の変動をも」を「
赤外線輻射エネルギーの強度の変動を」に訂正する。
８、補正の内容The figure is an overall configuration diagram showing an embodiment of the present invention. 1...Temperature measuring object, 2...Infrared optical fiber, 3...
・Detector, 4...Infrared optical fiber for temperature compensation. Spontaneous procedural amendment July 17, 1982 Patent Application No. 81182 2, Title of invention: Radiation thermometer 5, Date of amendment order 6, Number of inventions increased by amendment 7, Specification subject to amendment Detailed Description of the Invention (1) Delete "fiber transmittance and" on page 2, line 3 of the specification. (2) On page 2, line 6, "transmission ~ intensity" is corrected to "intensity of infrared radiant energy emitted by r itself." (3) "Intensity" in the 17th line of page 2 and the last line of page 3 will be corrected to "intensity of energy." (4) On page 4, line 6, "transmittance and infrared radiation" is corrected to "of infrared radiant energy." (5) "Transmittance of infrared radiation" on page 5, line 8 of the same is corrected to "of infrared radiant energy." (6) On page 5, line 19 of the same page, change “Also changes in transmittance, etc.” to “
Correct the fluctuation in the intensity of infrared radiant energy to ``. 8. Contents of amendment
Claims (1)
ーで検出器に導ひき、該赤外光から被測温体の温度を測
定するようにした放射温度計において、被測温体と検出
器との間に前記赤外光ファイバーと同−又は同一特性を
有する温度補償用の赤外光ファイバーを別途設けたこと
を特徴とする放射温度計。 （２）前記温度補償用の赤外光ファイバーにはその一端
から所定の赤外線を照射することを特徴とする特許請求
の範囲第（１）項に記載の放射温度計。 （３）前記温度補償用の赤外光ファイバーの一端を光遮
蔽体で閉鎖したことを特徴とする特許請求の範囲第（１
）項に記載の放射温度計。[Claims] +1) In a radiation thermometer in which infrared light emitted by a temperature-measuring object is guided to a detector through an infrared optical fiber, and the temperature of the temperature-measuring object is measured from the infrared light. A radiation thermometer, characterized in that an infrared optical fiber for temperature compensation having the same or the same characteristics as the infrared optical fiber is separately provided between the object to be measured and the detector. (2) The radiation thermometer as set forth in claim (1), wherein the infrared optical fiber for temperature compensation is irradiated with a predetermined infrared ray from one end thereof. (3) Claim No. 1, characterized in that one end of the infrared optical fiber for temperature compensation is closed with a light shielding body.
Radiation thermometer described in section ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8118282A JPS58196430A (en) | 1982-05-12 | 1982-05-12 | Radiation thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8118282A JPS58196430A (en) | 1982-05-12 | 1982-05-12 | Radiation thermometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58196430A true JPS58196430A (en) | 1983-11-15 |
| JPH0153407B2 JPH0153407B2 (en) | 1989-11-14 |
Family
ID=13739325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8118282A Granted JPS58196430A (en) | 1982-05-12 | 1982-05-12 | Radiation thermometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58196430A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249018A (en) * | 1984-05-24 | 1985-12-09 | Matsushita Electric Ind Co Ltd | Infrared optical fiber device |
| JPS63121721A (en) * | 1986-11-11 | 1988-05-25 | Japan Electronic Ind Dev Assoc<Jeida> | Infrared fiber thermometer |
| JPH04221723A (en) * | 1990-12-21 | 1992-08-12 | Anritsu Corp | Photodetecting mechanism |
-
1982
- 1982-05-12 JP JP8118282A patent/JPS58196430A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249018A (en) * | 1984-05-24 | 1985-12-09 | Matsushita Electric Ind Co Ltd | Infrared optical fiber device |
| JPS63121721A (en) * | 1986-11-11 | 1988-05-25 | Japan Electronic Ind Dev Assoc<Jeida> | Infrared fiber thermometer |
| JPH04221723A (en) * | 1990-12-21 | 1992-08-12 | Anritsu Corp | Photodetecting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0153407B2 (en) | 1989-11-14 |
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