JPS62169042A - Moisture sensor with improved temperature characteristic - Google Patents
Moisture sensor with improved temperature characteristicInfo
- Publication number
- JPS62169042A JPS62169042A JP1271786A JP1271786A JPS62169042A JP S62169042 A JPS62169042 A JP S62169042A JP 1271786 A JP1271786 A JP 1271786A JP 1271786 A JP1271786 A JP 1271786A JP S62169042 A JPS62169042 A JP S62169042A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- sensor
- pair
- humidity sensor
- humidity
- 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
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000011540 sensing material Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
【発明の詳細な説明】
〔従来技術〕
各種湿度センサーの中で、電気抵抗式湿度センサーは、
湿度を電気信号に変換するのが最も簡単であるという理
由により、その利用が急速に拡大している。しかし、電
気抵抗式湿度センサーは、抵抗の温度係数が大きく、湿
度センサーとして利用するためには、温度特性を補償す
る必要がある。[Detailed Description of the Invention] [Prior Art] Among various humidity sensors, electric resistance humidity sensors are
Its use is rapidly expanding because it is easiest to convert humidity into electrical signals. However, electric resistance type humidity sensors have a large temperature coefficient of resistance, and in order to be used as a humidity sensor, it is necessary to compensate for the temperature characteristics.
従来，電気抵抗式湿度センサーを使用する場合には、サ
ーミスタ等の温度センサーを付加して、湿度センサーの
温度特性補償を行なっていた，このため、部品点数が増
加し、その上、湿度センサーの温度特性とサーミスタの
温度特性が異なるたられる前記問題点の解決された湿度
センサーを提供することを目的とする。Conventionally, when using an electrical resistance type humidity sensor, a temperature sensor such as a thermistor was added to compensate for the temperature characteristics of the humidity sensor.This increased the number of parts and also made the humidity sensor It is an object of the present invention to provide a humidity sensor that solves the above-mentioned problem in that the temperature characteristics and the temperature characteristics of the thermistor are different.
本発明によれば、特性のそろった一対の電気抵抗式湿度
センサーからなり、該一対の湿度センサーの一方を、そ
の表面に耐湿処理を施して、他方の湿度センサーの温度
特性補償用素子として用いることを特徴とする温度特性
の改善された湿度センサーが提供される。According to the present invention, it consists of a pair of electrical resistance type humidity sensors with the same characteristics, and one of the pair of humidity sensors is subjected to a moisture-resistant treatment on its surface and is used as a temperature characteristic compensating element for the other humidity sensor. A humidity sensor with improved temperature characteristics is provided.
本発明においては、一対の電気抵抗式湿度センサー（以
下，頃に湿度センサーとも言う）を用いるが、この場合
、その一対の湿度センサーは、その特性がほぼそろった
ものとし、そして、その一方には、耐湿処理を施し、湿
度の影響を受けないようにする。この場合の耐湿処理は
、従来公知の耐湿処理剤１例えば、フッ素樹脂やシリコ
ーン樹脂。In the present invention, a pair of electrical resistance type humidity sensors (hereinafter also referred to as humidity sensors) is used. In this case, the characteristics of the pair of humidity sensors are almost the same, and one of them is be subjected to moisture-resistant treatment so that it is not affected by humidity. In this case, the moisture resistance treatment is performed using a conventionally known moisture resistance treatment agent such as a fluororesin or a silicone resin.
ポリ塩化ビニリデン樹脂、ワックス類、その他の樹脂を
用い、表面に耐湿膜を形成することによって行うことが
できる。This can be done by forming a moisture-resistant film on the surface using polyvinylidene chloride resin, waxes, or other resins.
本発明の湿度センサーは、前記のように、通常の湿度セ
ンサーと、表面が耐湿処理された湿度センサーとからな
り、その耐湿処理された湿度センサーを、他方の通常の
湿度センサーの温度特性補て直列に接続した実施例を示
し、グランド端子１゜と出力端子１１との間に温度特性
の補償された電圧が湿度センサーの出力として得られる
。温度変化による湿度センサーの電気抵抗の変化は、湿
度センサーＡ、 Ｂとも同じであるので、温度変化のみ
によっては端子１０と１１との間の電圧は変化しない。As described above, the humidity sensor of the present invention consists of a normal humidity sensor and a humidity sensor whose surface has been treated with moisture resistance, and the humidity sensor with the moisture resistance treatment is used to compensate for the temperature characteristics of the other ordinary humidity sensor. An embodiment in which the sensors are connected in series is shown, and a voltage whose temperature characteristics are compensated for is obtained between the ground terminal 1° and the output terminal 11 as the output of the humidity sensor. Since the change in electrical resistance of the humidity sensor due to temperature change is the same for both humidity sensors A and B, the voltage between terminals 10 and 11 does not change only due to temperature change.
度センサーＡと通常の湿度センサーＢとを負荷抵抗３．
４をそれぞれ介して並列に接続する。端子１１と１２と
の間の差電圧が温度特性の補償された湿度センサーの出
力となる。temperature sensor A and a normal humidity sensor B with a load resistance 3.
4 are connected in parallel through each. The differential voltage between terminals 11 and 12 is the output of the humidity sensor with compensated temperature characteristics.
第３図は、第２図において、その抵抗３，４をそれぞれ
ダイオード５，６で置換した実施例で、ダイオードによ
り非線形の信号処理を行った例を示す。FIG. 3 shows an example in which the resistors 3 and 4 in FIG. 2 are replaced with diodes 5 and 6, respectively, and nonlinear signal processing is performed using the diodes.
第４図は、特性のそろった一対の湿度センサーを一体化
し、一方に耐湿処理を施した湿度センサーの構造を示す
実施例である。基板２ｏの上に湿度センサーＡ、Ｂを固
定し、リード線２１，２２，２３を接続した後、湿度セ
ンサーＡに耐湿処理を施す。第５図は、その一体化をさ
らに進め、同一基板上に３端子湿度センサーとして、２
つの湿度センサーを併合形成した例である。感湿材料基
板２ｏの表面に電極焼付けにより一対の感湿センサ一部
Ａ、Ｂを作り、一方の感湿センサ一部Ａに耐湿処理を施
す。FIG. 4 is an embodiment showing the structure of a humidity sensor in which a pair of humidity sensors with the same characteristics are integrated and one is subjected to moisture-resistant treatment. After fixing the humidity sensors A and B on the substrate 2o and connecting the lead wires 21, 22, and 23, the humidity sensor A is subjected to a moisture resistance treatment. Figure 5 shows further integration of two 3-terminal humidity sensors on the same board.
This is an example of merging two humidity sensors. A pair of humidity sensor parts A and B are made by baking electrodes on the surface of the humidity sensitive material substrate 2o, and one humidity sensor part A is subjected to a moisture-proofing treatment.
以上の構成により、湿度センサーの温度特性を大幅に改
善することができる。これに伴い、湿度センサ一応用回
路の部品点数を減らし、かつ無調整化も容易になる。With the above configuration, the temperature characteristics of the humidity sensor can be significantly improved. Accordingly, the number of parts in the humidity sensor application circuit can be reduced, and it becomes easy to eliminate the need for adjustment.
第１図〜第３図は本発明の湿度センサーの応用について
の実施例を示し、第１図は直列接続法にょ例を示し、第
５図は３端子湿度センサーを一体に形成した例を示す。
１・・・電源 ２・・・耐湿膜、１０・・・グランド端
子、１、１ 、１２・・・出力端子、２０・・・基板、
２１〜２３・・・リード線、Ａ・・・ｉｔ湿処理された
湿度センサー、Ｂ・・・湿度センサー。Figures 1 to 3 show examples of application of the humidity sensor of the present invention, Figure 1 shows an example of a series connection method, and Figure 5 shows an example of integrally forming a three-terminal humidity sensor. . DESCRIPTION OF SYMBOLS 1...Power source 2...Moisture-resistant membrane, 10...Ground terminal, 1, 1, 12...Output terminal, 20...Substrate,
21-23... Lead wire, A... Humidity sensor subjected to humidity treatment, B... Humidity sensor.
Claims (1)
からなり、該一対の湿度センサーの一方を、その表面に
耐湿処理を施して、他方の湿度センサーの温度特性補償
用素子として用いることを特徴とする温度特性の改善さ
れた湿度センサー。(1) It consists of a pair of electrical resistance type humidity sensors with the same characteristics, and one of the humidity sensors of the pair is subjected to a moisture-resistant treatment on its surface, and is used as an element for compensating the temperature characteristics of the other humidity sensor. Humidity sensor with improved temperature characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1271786A JPS62169042A (en) | 1986-01-22 | 1986-01-22 | Moisture sensor with improved temperature characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1271786A JPS62169042A (en) | 1986-01-22 | 1986-01-22 | Moisture sensor with improved temperature characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62169042A true JPS62169042A (en) | 1987-07-25 |
Family
ID=11813183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1271786A Pending JPS62169042A (en) | 1986-01-22 | 1986-01-22 | Moisture sensor with improved temperature characteristic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62169042A (en) |
-
1986
- 1986-01-22 JP JP1271786A patent/JPS62169042A/en active Pending
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