JPH0242181B2 - - Google Patents
Info
- Publication number
- JPH0242181B2 JPH0242181B2 JP3863583A JP3863583A JPH0242181B2 JP H0242181 B2 JPH0242181 B2 JP H0242181B2 JP 3863583 A JP3863583 A JP 3863583A JP 3863583 A JP3863583 A JP 3863583A JP H0242181 B2 JPH0242181 B2 JP H0242181B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- measurement
- temperature sensor
- measured
- sensor
- 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
- 238000005259 measurement Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【発明の詳細な説明】
本発明は、熱じよう乱消去形の表面温度測定方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring surface temperature using thermodynamic randomization.
測定対象面に温度センサを接触させて測定する
接触式の表面温度計では、センサ接触点で起る熱
じよう乱が原因して測定誤差を生ずる。従来、こ
の熱じよう乱に影響されない表面温度の測定方法
として、微分値零位法（微分値零位法による表面
温度の計測：計測自動制御学会論文集第11巻第３
号、自動化された微分値零位法による表面温度計
測：計測自動制御学会論文集第13巻第１号）によ
る表面温度測定法が知られている。しかし、この
零位法による測定は、温度センサを測定面に接触
させた瞬間のセンサの温度変化を利用して、セン
サが測定面の温度と等しくなるようにセンサを加
熱する操作を行つているために、数回の接触試行
を必要とする、連続測定ができないなどの欠点が
ある。 In contact-type surface thermometers that measure temperature by bringing the temperature sensor into contact with the surface to be measured, measurement errors occur due to thermal disturbances that occur at the sensor contact point. Conventionally, as a method for measuring surface temperature that is not affected by thermal disturbances, the zero differential method (measurement of surface temperature using the zero differential method: Transactions of the Society of Instrument and Control Engineers, Vol. 11, No. 3)
Surface temperature measurement using an automated zero-differential method: Transactions of the Society of Instrument and Control Engineers, Vol. 13, No. 1) is known. However, measurement using this zero-position method uses the temperature change of the sensor at the moment the temperature sensor contacts the measurement surface to heat the sensor so that it becomes equal to the temperature of the measurement surface. Therefore, it has drawbacks such as requiring several contact trials and not being able to perform continuous measurements.
本発明は、上記の従来の零位法による測定方法
と比較して、偏位法を採用しているために、１回
または２回の接触試行で測定できる、連続測定が
可能なものを作ることができるなどの利点を有す
る。 Compared to the conventional measurement method using the zero position method described above, the present invention adopts the deflection method, so that measurement can be performed in one or two contact trials and continuous measurement is possible. It has the following advantages:
次に、本発明の測定方法についてさらに具体的
に説明する。 Next, the measuring method of the present invention will be explained in more detail.
第１図のように、表面温度Ts、熱伝導率Ｋの
物体の測定対象面に、先端に感温部を有する温度
センサを接触させて、その導線部分の一部を加熱
炉で一定の温度Ｔに加熱する。この状態では、温
度センサの測定対象接触部と加熱部との間の熱抵
抗をｒ、測定対象から温度センサに流れる熱流を
Ｑ、温度センサの測定対象接触点の温度をＪ、温
度センサを接触させたことによつて生じた測定対
象面の熱じよう乱による接触点の温度変化を△Ｔ
とし、熱伝導以外の現象を無視すれば、Ts、Ｋ、
Ｔ、ｒ、Ｑ、Ｊ、△Ｔの間に次の関係が成立す
る。 As shown in Figure 1, a temperature sensor with a temperature-sensing section at the tip is brought into contact with the surface to be measured of an object having a surface temperature T s and a thermal conductivity K, and a part of the conductive wire is heated at a certain temperature in a heating furnace. Heat to temperature T. In this state, the thermal resistance between the contact part of the temperature sensor to be measured and the heating part is r, the heat flow flowing from the measurement target to the temperature sensor is Q, the temperature of the contact point of the temperature sensor to be measured is J, and the temperature sensor is △T
If phenomena other than heat conduction are ignored, T s , K,
The following relationship holds between T, r, Q, J, and ΔT.
△Ｔ＝α・Ｑ／Ｋ (1)
Ｑ＝Ｊ−Ｔ／ｒ (2)
Ｊ＝Ts＋△Ｔ (3)
ただし、αは熱伝導方程式を解いて求まる定数
(1)、(2)、(3)式からＱ、△Ｔを消去すると次式が得
られる。 △T=α・Q/K (1) Q=J−T/r (2) J=T s +△T (3) However, α is a constant found by solving the heat conduction equation
By eliminating Q and ΔT from equations (1), (2), and (3), the following equation is obtained.
Ｊ−Ts＝α／ｒ・Ｋ（Ｊ−Ｔ） (4)
(4)式の関係を利用すれば、Ｔ＝Tlの条件での温
度センサ出力JlとTsの関係
Jl−Ts＝α／ｒ・Ｋ（Jl−Tl） (5)
と、Ｔ＝Thの条件での温度センサ出力JhとTsの
関係
Jh−Ts＝α／ｒ・Ｋ（Jh−Th） (6)
とから、α（ｒ・Ｋ）を消去して得られる次式
Ts＝Jl・Th−Jh・Tl／（Jl−Tl）−（Jh−Th）(7
)
によつて、熱じよう乱のない状態の測定対象面の
温度Tsを求めることができる。 J-T s = α/r・K (J-T) (4) Using the relationship in equation (4), the relationship between temperature sensor output J l and T s under the condition of T = T l is J l − T s = α/r・K(J l −T l ) (5) and the relationship between temperature sensor output J h and T s under the condition of T=T h J h −T s = α/r・K( J h −T h ) (6), the following equation obtained by eliminating α(r・K) is T s = J l・T h −J h・T l /(J l −T l )−( J h −T h )(7
), the temperature T s of the surface to be measured without thermal disturbance can be determined.
熱じよう乱消去形の表面温度測定方法は、この
原理に基づくもので、１組の温度センサで加熱温
度Ｔを変えて測定するか、加熱温度が異なる２組
の温度センサで同時測定する方法で得られる測定
値Jl、Tl、Jh、Thから、熱じよう乱のない状態の
測定対象面の温度Tsを求める。 The surface temperature measurement method of thermal distortion elimination type is based on this principle, and is measured by changing the heating temperature T using one set of temperature sensors, or by measuring simultaneously using two sets of temperature sensors with different heating temperatures. From the measured values J l , T l , J h , and T h obtained in , the temperature T s of the surface to be measured without thermal disturbance is determined.
なお、この測定方法では、熱じよう乱のない状
態の表面温度を精度よく求めるには、｜Th−Tl｜
が数十Ｋ以下になる条件で、TsをTlからThの範
囲の温度に選んで測定することが望ましい。 Note that with this measurement method, to accurately determine the surface temperature without thermal disturbances, |T h −T l |
It is desirable to measure T s at a temperature in the range of T l to T h under conditions where the temperature is several tens of K or less.
第１図は本発明の測定原理図である。
１……測定対象面、２……温度センサ感温部、
３……温度センサ導線部、４……加熱炉。
FIG. 1 is a diagram showing the measurement principle of the present invention. 1...Measurement target surface, 2...Temperature sensor temperature sensing part,
3...Temperature sensor conductor section, 4...Heating furnace.
Claims (1)
ずる熱じよう乱による測定面の温度変化を、温度
Tlの熱源を有する温度センサの測定値Jlと温度Th
の熱源有する温度センサの測定値Jh、または、温
度Tlの熱源を有する温度センサの測定値Jlと温度
Tlの熱源を温度Thとしたときの測定値Jhを用い
て、測定値Jl、Jhと温度Tl、Thとによつて消去
し、熱じよう乱のない状態の表面温度が求められ
るようにしたことを特徴とする熱じよう乱消去形
の表面温度測定方法。1 The temperature change on the measurement surface due to the thermal disturbance that occurs when the temperature sensor is brought into contact with the measurement surface is
Measured value J l and temperature T h of a temperature sensor with a heat source of T l
The measured value J h of a temperature sensor with a heat source of temperature T l, or the measured value J l of a temperature sensor with a heat source of temperature T l and temperature
Using the measured value J h when the heat source of T l is at the temperature T h , erase by the measured values J l , J h and the temperatures T l , T h to obtain a surface with no thermal disturbance. A method for measuring a surface temperature using a heat-induced randomization method, characterized in that the temperature can be determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3863583A JPS59163527A (en) | 1983-03-09 | 1983-03-09 | Surface temperature measuring method of thermal agitation eliminating type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3863583A JPS59163527A (en) | 1983-03-09 | 1983-03-09 | Surface temperature measuring method of thermal agitation eliminating type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59163527A JPS59163527A (en) | 1984-09-14 |
| JPH0242181B2 true JPH0242181B2 (en) | 1990-09-20 |
Family
ID=12530696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3863583A Granted JPS59163527A (en) | 1983-03-09 | 1983-03-09 | Surface temperature measuring method of thermal agitation eliminating type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59163527A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2580806B1 (en) * | 1985-04-19 | 1987-06-26 | Gouault Jean | THERMOMETRIC PROBE FOR MEASURING SURFACE TEMPERATURES, PARTICULARLY SKIN |
| DE59910916D1 (en) * | 1999-01-22 | 2004-11-25 | Jury Anatolievich Popov | METHOD FOR ABSOLUTELY DETERMINING THE HEAT CONDUCTIVITY OF SOLIDS, AND DEVICE FOR THEIR USE |
-
1983
- 1983-03-09 JP JP3863583A patent/JPS59163527A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59163527A (en) | 1984-09-14 |
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