JPH02665Y2 - - Google Patents
Info
- Publication number
- JPH02665Y2 JPH02665Y2 JP8769184U JP8769184U JPH02665Y2 JP H02665 Y2 JPH02665 Y2 JP H02665Y2 JP 8769184 U JP8769184 U JP 8769184U JP 8769184 U JP8769184 U JP 8769184U JP H02665 Y2 JPH02665 Y2 JP H02665Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- temperature measurement
- moisture
- sensor
- sensitive
- 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
- 238000009529 body temperature measurement Methods 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】 ［考案の技術分野］ 本考案は温度測定用センサに係る。[Detailed explanation of the idea] [Technical field of invention] The present invention relates to a temperature measurement sensor.
［考案の技術的背景とその問題点］
温度測定用センサとして従来から広く使用され
ているものに、熱電対やサーミスタがある。これ
らの中、熱電対は測定温度範囲が広く、測定精度
が高いものの、出力電圧が数mVと小さいため、
高い増巾度を持つた安定な直流増巾器を必要とす
る。また、サーミスタは、温度変化に対する抵抗
値の変化が大であり高感度ではあるが、抵抗の変
化が指数的であるため、変化量の圧縮や線型化
（リニアライズ）などの信号処理を必要とする。[Technical background of the invention and its problems] Thermocouples and thermistors have been widely used as temperature measurement sensors. Among these, thermocouples have a wide measurement temperature range and high measurement accuracy, but their output voltage is small at a few mV.
A stable DC amplifier with high amplification degree is required. In addition, thermistors have a large change in resistance value with respect to temperature changes and are highly sensitive, but because the change in resistance is exponential, signal processing such as compression of the amount of change and linearization is required. do.
上記から明らかなように、熱電対やサーミスタ
をセンサとして使用した時、温度測定回路の構成
が複雑となり、温度測定装置は高価でしかも使い
難いものとなり勝ちであつた。 As is clear from the above, when a thermocouple or thermistor is used as a sensor, the configuration of the temperature measurement circuit becomes complicated, and the temperature measurement device tends to be expensive and difficult to use.
［考案の目的］
本考案は上記の事情に基きなされたもので、複
雑な温度測定回路を使用することなく、高感度で
温度測定をすることができる温度測定用センサを
得ることを目的としている。[Purpose of the invention] The present invention was created based on the above circumstances, and its purpose is to obtain a temperature measurement sensor that can measure temperature with high sensitivity without using a complicated temperature measurement circuit. .
［考案の概要］
本考案の温度測定用センサは、酸化亜鉛、酸化
クロム等を主成分としこれに感湿体を添加して成
る粉末を成型焼結し、この焼結体に電極を取付け
て構成した感湿性セラミツク素子の周囲を、通気
性の小さな部材でおおつたことを特徴とする。[Summary of the invention] The temperature measurement sensor of the invention is made by molding and sintering a powder made of zinc oxide, chromium oxide, etc. as the main ingredients and adding a moisture sensitive element to it, and attaching electrodes to this sintered body. The structure is characterized in that the periphery of the constructed moisture-sensitive ceramic element is covered with a small breathable member.
［考案の実施例］
湿度センサは酸化亜鉛、酸化クロム等を主成分
とし、感湿体として例えばリチウム、バナジウム
系ガラスを添加した粉体を、成型し高温焼結した
多孔質セラミツクに電極を取付けて構成する。こ
の湿度センサは、結晶表面での水分子の吸脱着に
より、焼結体内部の電気抵抗が外部の相対湿度に
対応して指数的に変化することを利用して、湿度
を検出する。[Example of the idea] The humidity sensor is a powder whose main components are zinc oxide, chromium oxide, etc., with addition of lithium or vanadium glass as a humidity sensing element, and electrodes are attached to porous ceramic that is molded and sintered at high temperature. Configure. This humidity sensor detects humidity by utilizing the fact that the electrical resistance inside the sintered body changes exponentially in response to the external relative humidity due to adsorption and desorption of water molecules on the crystal surface.
ところが、上記構成の感湿性セラミツクは、電
気抵抗が湿度によつて変化するだけでなく、温度
によつても変化するので、温度補償を施さないと
正確な相対湿度が得られない欠点がある。第１図
は相対湿度と前記の電気抵抗値の関係の温度依存
性を示す。 However, the electrical resistance of the moisture-sensitive ceramic having the above structure changes not only with humidity but also with temperature, and therefore has the disadvantage that accurate relative humidity cannot be obtained unless temperature compensation is performed. FIG. 1 shows the temperature dependence of the relationship between relative humidity and the electrical resistance value.
本考案の温度測定用センサは上記の欠点を利用
する。すなわち、感湿性セラミツク素子の表面を
ガラスや樹脂の通気性の低い被膜でおおつたり、
感湿性セラミツク素子をガラス管や樹脂管中に封
入したりして、感湿性セラミツク素子への湿度の
影響を遮断して、本考案の温度測定用センサを構
成する。 The temperature measurement sensor of the present invention takes advantage of the above drawbacks. In other words, the surface of the moisture-sensitive ceramic element is covered with a glass or resin film with low air permeability.
The temperature measurement sensor of the present invention is constructed by sealing the moisture-sensitive ceramic element in a glass tube or resin tube to block the influence of humidity on the moisture-sensitive ceramic element.
第２図はその特性を示す。この図から、温度
0゜C〜50゜Cの範囲で本考案センサの抵抗値は１桁
近い変化を生じており、高感度な温度測定用セン
サとして使用し得ることがわかる。また、0゜C〜
40゜Cの生活温度域では、周囲温度と抵抗値とは比
例関係にあり、抵抗値の変化をそのまま温度変化
として直読し得ることもわかる。 Figure 2 shows its characteristics. From this figure, the temperature
The resistance value of the sensor of the present invention changes by nearly an order of magnitude in the range of 0°C to 50°C, indicating that it can be used as a highly sensitive temperature measurement sensor. Also, 0°C ~
It can also be seen that in the 40°C living temperature range, there is a proportional relationship between ambient temperature and resistance value, and that changes in resistance value can be directly read as temperature changes.
第３図は本考案センサを使用した温度測定回路
の一例を示す。 FIG. 3 shows an example of a temperature measurement circuit using the sensor of the present invention.
温度測定用センサ１の出力は、増巾回路２で増
巾され、その出力は表示器または記録装置３に表
示または記録される。本考案のセンサは前記のよ
うな特性を有するため、サーミスタをセンサとす
る回路では不可欠である対数圧縮回路や線型化回
路を必要とせず、前記の簡単な温度測定回路です
む。 The output of the temperature measurement sensor 1 is amplified by an amplification circuit 2, and the output is displayed or recorded on a display or recording device 3. Since the sensor of the present invention has the above-mentioned characteristics, it does not require a logarithmic compression circuit or a linearization circuit, which are indispensable in a circuit using a thermistor as a sensor, and the simple temperature measurement circuit described above is sufficient.
［考案の効果］
本考案の温度測定用センサは、高感度でしかも
生活温度域で抵抗値と周囲温度が比例関係にある
ため、温度測定回路が簡単な構成のものですみ、
安価でしかも使い易い温度測定装置を構成するこ
とができる。[Effects of the invention] The temperature measurement sensor of the invention is highly sensitive and has a proportional relationship between the resistance value and the ambient temperature in the living temperature range, so the temperature measurement circuit can be of a simple configuration.
A temperature measuring device that is inexpensive and easy to use can be constructed.
第１図は感湿性セラミツク素子の温度依存性を
示す図、第２図は本考案一実施例の特性図、第３
図は本考案温度測定用センサを使用した温度測定
回路のブロツクダイヤグラムである。
Fig. 1 is a diagram showing the temperature dependence of a moisture-sensitive ceramic element, Fig. 2 is a characteristic diagram of an embodiment of the present invention, and Fig. 3 is a diagram showing the temperature dependence of a moisture-sensitive ceramic element.
The figure is a block diagram of a temperature measurement circuit using the temperature measurement sensor of the present invention.
Claims (1)
湿体を添加して成る粉末を成型焼結し、この焼結
体に電極を取付けて構成した感湿性セラミツク素
子の周囲を、通気性の小さな部材でおおつたこと
を特徴とする温度測定用センサ。 A moisture-sensitive ceramic element is formed by molding and sintering a powder consisting mainly of zinc oxide, chromium oxide, etc. and adding a moisture-sensitive element, and then attaching electrodes to this sintered body. A temperature measurement sensor characterized by being covered with a material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8769184U JPS613434U (en) | 1984-06-12 | 1984-06-12 | Sensor for temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8769184U JPS613434U (en) | 1984-06-12 | 1984-06-12 | Sensor for temperature measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS613434U JPS613434U (en) | 1986-01-10 |
| JPH02665Y2 true JPH02665Y2 (en) | 1990-01-09 |
Family
ID=30640144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8769184U Granted JPS613434U (en) | 1984-06-12 | 1984-06-12 | Sensor for temperature measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS613434U (en) |
-
1984
- 1984-06-12 JP JP8769184U patent/JPS613434U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS613434U (en) | 1986-01-10 |
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