JPS5942249B2 - Radiation thermometer compensation circuit - Google Patents
Radiation thermometer compensation circuitInfo
- Publication number
- JPS5942249B2 JPS5942249B2 JP11674276A JP11674276A JPS5942249B2 JP S5942249 B2 JPS5942249 B2 JP S5942249B2 JP 11674276 A JP11674276 A JP 11674276A JP 11674276 A JP11674276 A JP 11674276A JP S5942249 B2 JPS5942249 B2 JP S5942249B2
- Authority
- JP
- Japan
- Prior art keywords
- radiation thermometer
- compensation
- nonlinearity
- linearization
- output
- 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.)
- Expired
Links
Landscapes
- Radiation Pyrometers (AREA)
Description
【発明の詳細な説明】
この発明は、放射温度計の温度一出力電圧特性の非直線
性を補償するための直線化回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a linearization circuit for compensating for nonlinearity in temperature-output voltage characteristics of a radiation thermometer.
放射温度計の温度一出力電圧特性は、
Ｅ＝εにＴｎ・・・・・・（ハ
ただしＥ：出力電圧
ε：放射率
Ｔ：温度（゜に）
ｎ二検出素子の種類で定まる定数
で表わされ、シリコンからなる検出素子の場合、定数ｎ
の値は、８００゜にで１８、１１００゜にで１４と大き
い。The temperature-output voltage characteristics of a radiation thermometer are E = ε and Tn... (where E: Output voltage ε: Emissivity T: Temperature (in °) n2 is a constant determined by the type of detection element. In the case of a sensing element made of silicon, the constant n
The value of is as large as 18 at 800° and 14 at 1100°.
すなわち放射温度計においては、温度一出力電圧特性の
非直線性はきわめて大きく、このような出力信号は、そ
のままの形態では取扱いが困難である。この発明の目的
は、放射温度計の出力信号の非直線性をきわめて高い精
度で補償することができる放射温度計の直線化回路を提
供することである。That is, in a radiation thermometer, the nonlinearity of the temperature-output voltage characteristic is extremely large, and such an output signal is difficult to handle in its original form. An object of the present invention is to provide a linearization circuit for a radiation thermometer that can compensate for nonlinearity in the output signal of a radiation thermometer with extremely high accuracy.
この発明の一実施例を図面にしたがつて説明する。図に
おいて符号１で示すプリアンプは、入力端子２に供給さ
れた放射温度計からの測定信号を増幅するためのもので
、その出力信号は、放射率εを補正するための可変抵抗
ＶＲを経て、つぎのバッファアンプ３に供給される。そ
してバッファアンプ３の出力信号は、複数段の補償段４
−１、４−２・・・ ４・・・ ｎを経て、出力端子５
から外部に取出される。各補償段４−１〜４−ｎは、演
算増幅器６を有し、その出力端と一方の入力端との間に
は、ダイオードＤと抵抗Ｒとの直列回路を適当な数だけ
相互に並列接続することによつて構成された帰還回路が
接続され、各補償段４−１〜４−ｎの演算増増器６は相
互にカスケード接続されている。An embodiment of the invention will be described with reference to the drawings. The preamplifier indicated by reference numeral 1 in the figure is for amplifying the measurement signal from the radiation thermometer supplied to the input terminal 2, and its output signal passes through a variable resistor VR for correcting the emissivity ε. The signal is supplied to the next buffer amplifier 3. The output signal of the buffer amplifier 3 is then transmitted to a plurality of compensation stages 4.
-1, 4-2... 4... Through n, output terminal 5
taken out to the outside. Each compensation stage 4-1 to 4-n has an operational amplifier 6, and between its output terminal and one input terminal, an appropriate number of series circuits of a diode D and a resistor R are connected in parallel. The operational amplifiers 6 of each compensation stage 4-1 to 4-n are connected to each other in cascade.
上記各補償段４−１〜４−ｎと演算増幅器６の組合せに
よつて直線化回路が構成され、放射温度計における温度
一出力電圧特性の非直線性に対する直線化が図られる。
そして各補償段４−１〜４−ｎは、帰還回路の特性に応
じて、入力信号と出力信号との間の関係に非直線性を有
し、第１の補償段４−１の入力信号と最終の補償段４−
ｎの出力信号との総合的な非直線性は、前記の（１）式
で表わされる非直線性と対称な関係を有するように調整
される。換言すれば、放射温度計の温度一出力電圧特性
が有している非直線性の補償は各補償段４−１〜４−ｎ
で分担され、各補償段４−１〜４−ｎにおける補償量は
、ダイオードＤおよび抵抗Ｒからなる並列回路の個々の
特性あるいはその数の調節によつてなされる。したがつ
て各補償段４−１〜４−ｎにおける補償量はその段数に
対応して小さくすることが可能であり、全体としての補
償特叶の精度が向上し、またその調整が容易になるとい
う効果が期待できる。A linearization circuit is constituted by the combination of each of the compensation stages 4-1 to 4-n and the operational amplifier 6, and linearization of the nonlinearity of the temperature-output voltage characteristic in the radiation thermometer is achieved.
Each of the compensation stages 4-1 to 4-n has non-linearity in the relationship between the input signal and the output signal depending on the characteristics of the feedback circuit, and the input signal of the first compensation stage 4-1 and the final compensation stage 4-
The overall nonlinearity with the n output signal is adjusted so as to have a symmetrical relationship with the nonlinearity expressed by equation (1) above. In other words, compensation for the nonlinearity of the temperature-output voltage characteristic of the radiation thermometer is achieved by each compensation stage 4-1 to 4-n.
The amount of compensation in each of the compensation stages 4-1 to 4-n is determined by adjusting the individual characteristics or the number of parallel circuits consisting of diodes D and resistors R. Therefore, the amount of compensation in each of the compensation stages 4-1 to 4-n can be made smaller corresponding to the number of stages, improving the accuracy of the compensation special effect as a whole and making its adjustment easier. This effect can be expected.
図面はこの発明の一実施例による放射温度計の直線化回
路の構成を示すプロツク図である。
１ ・・・・・・プリアンプ、２・・・・・・入力端子
、３ ・・・・・バツフアアンプ、４−１〜４−ｎ・・
・・・・補償段、５・・・・・・出力端子、６・・・・
・・演算増幅器。The drawing is a block diagram showing the configuration of a linearization circuit for a radiation thermometer according to an embodiment of the present invention. 1...Preamplifier, 2...Input terminal, 3...Buffer amplifier, 4-1 to 4-n...
... Compensation stage, 5 ... Output terminal, 6 ...
...Operation amplifier.
Claims (1)
射温度計の温度−出力電圧特性の非直線性を補償するた
めの信号を取出す出力端子との間に、演算増幅器と該演
算増幅器の出力端と入力端間に接続された帰還回路とか
ら構成された直線化回路を介在し、前記放射温度計に複
数の前記直線化回路を直列接続して前記温度−出力電圧
特性の非直線性に対する直線化を図つたことを特徴とす
る放射温度計の直線化回路。1 An operational amplifier and an operational amplifier are connected between an input terminal to which an output signal of the radiation thermometer is supplied and an output terminal from which a signal for compensating for nonlinearity of the temperature-output voltage characteristic of the radiation thermometer is supplied. A linearization circuit composed of a feedback circuit connected between an output terminal and an input terminal is interposed, and a plurality of linearization circuits are connected in series to the radiation thermometer to eliminate nonlinearity of the temperature-output voltage characteristic. A linearization circuit for a radiation thermometer, characterized in that linearization is achieved for a radiation thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11674276A JPS5942249B2 (en) | 1976-09-29 | 1976-09-29 | Radiation thermometer compensation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11674276A JPS5942249B2 (en) | 1976-09-29 | 1976-09-29 | Radiation thermometer compensation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5342788A JPS5342788A (en) | 1978-04-18 |
| JPS5942249B2 true JPS5942249B2 (en) | 1984-10-13 |
Family
ID=14694651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11674276A Expired JPS5942249B2 (en) | 1976-09-29 | 1976-09-29 | Radiation thermometer compensation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942249B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10921774B2 (en) * | 2017-07-21 | 2021-02-16 | Fanuc Corporation | Machine learning devices and methods for optimizing the speed and accuracy of thread mill, inner diameter, outer shape, and surface machine tools |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571933A (en) * | 1980-06-05 | 1982-01-07 | Nippon Steel Corp | Measuring apparatus for temperature distribution |
| JPS5844950U (en) * | 1981-09-24 | 1983-03-25 | トステム株式会社 | Seat board |
| US4527896A (en) * | 1982-03-04 | 1985-07-09 | Mikron Instrument Company, Inc. | Infrared transducer-transmitter for non-contact temperature measurement |
| JPS6111357U (en) * | 1984-06-26 | 1986-01-23 | 池田物産株式会社 | vehicle seat |
| JPH068751Y2 (en) * | 1986-12-02 | 1994-03-09 | 株式会社イノアックコーポレーション | Seat cushion body |
-
1976
- 1976-09-29 JP JP11674276A patent/JPS5942249B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10921774B2 (en) * | 2017-07-21 | 2021-02-16 | Fanuc Corporation | Machine learning devices and methods for optimizing the speed and accuracy of thread mill, inner diameter, outer shape, and surface machine tools |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5342788A (en) | 1978-04-18 |
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