JPH04190826A - Control apparatus of air purifier - Google Patents
Control apparatus of air purifierInfo
- Publication number
- JPH04190826A JPH04190826A JP2318539A JP31853990A JPH04190826A JP H04190826 A JPH04190826 A JP H04190826A JP 2318539 A JP2318539 A JP 2318539A JP 31853990 A JP31853990 A JP 31853990A JP H04190826 A JPH04190826 A JP H04190826A
- Authority
- JP
- Japan
- Prior art keywords
- gas sensor
- sensitivity
- resistance value
- gas
- air
- 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
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、空気の汚れを検知し、汚れに応じて空気の浄
化を行なう空気清浄器の制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for an air cleaner that detects air pollution and purifies the air depending on the air pollution.
従来の技術
近年、室内の環境を良くするために空気清浄器が広く使
用されるようになってきており、ガスセンサを用いて空
気の汚れを検知して自動運転する方式のものが出現して
いる。Conventional technology In recent years, air purifiers have become widely used to improve the indoor environment, and devices that use gas sensors to detect air pollution and operate automatically have appeared. .
従来、この種の空気清浄器の制御装置は第４図に示すよ
うなものが一般的であった。すなわち、ガス濃度に応じ
て抵抗値が変化するガスセンサ１を用い、検出手段２が
ガスセンサ１の抵抗値の変化量から空気の汚れ度合を検
出し、この信号を制御手段３に入力して検出レベルに応
じてファンモータ４を駆動して空気の浄化を行なってい
た。また、ガスセンサ１はガス濃度によって抵抗値の変
化量が増加するものであり、制御手段３はあるガス濃度
（清浄と思われる空気）の時の抵抗値を基醜抵抗値Ｒ０
とし、この値に対して現在のガス濃度における抵抗値Ｈ
の変化量から空気の汚れ度合を判断し出力するものであ
る。Conventionally, a control device for this type of air cleaner was generally as shown in FIG. That is, using a gas sensor 1 whose resistance value changes depending on the gas concentration, the detection means 2 detects the degree of air pollution from the amount of change in the resistance value of the gas sensor 1, and inputs this signal to the control means 3 to determine the detection level. The fan motor 4 was driven in response to the air purification. In addition, the gas sensor 1 is such that the amount of change in resistance value increases depending on the gas concentration, and the control means 3 sets the resistance value R0 based on the resistance value at a certain gas concentration (air that is considered to be clean).
Then, with respect to this value, the resistance value H at the current gas concentration is
The degree of air pollution is determined and output based on the amount of change in the amount of air.
発明が解決しようとする課題
このような従来の空気清浄器の制御装置では、ガスセン
サ１は、ガス濃度の変化量によって抵抗値の変化量があ
る一定の範囲で個々にばらついてしまうという難ガがあ
った。このだめ、ある基準でガス濃度を設定し、この検
査工程でガスセンサ１の感度を測定し、センサを選別し
て使用していた。この結果、ガスセンサ１の歩留まりが
悪く、コストアップにつながっていた。また、ガスセン
サ１を選別せずに使用した場合は、空気の汚れに対する
判断のばらつきが大きく、使用できないとめう問題があ
った。Problems to be Solved by the Invention In such a conventional air purifier control device, the gas sensor 1 has a problem in that the resistance value varies individually within a certain range depending on the amount of change in gas concentration. there were. To avoid this, the gas concentration was set according to a certain standard, the sensitivity of the gas sensor 1 was measured in this inspection process, and the sensors were selected and used. As a result, the yield of the gas sensor 1 was poor, leading to an increase in cost. Further, when the gas sensor 1 is used without being sorted, there is a problem in that the judgment regarding air contamination varies greatly, making it unusable.
本発明は、上記問題を解決するもので、ガスセンサのあ
るガス濃度に対する抵抗値の変化量をあらかじめ検知し
ておき、この値に応じて実使用時の抵抗値の変化量に補
正をかけることにより、製ｌたすべてのガスセンサにお
いて、常に同一なレベルで空気の汚れ度合を判断でき、
安価でかつ信頼性の高い空気清浄器の制御装置を提供す
ることを目的としている。The present invention solves the above problem by detecting in advance the amount of change in resistance value of a gas sensor with respect to a certain gas concentration, and correcting the amount of change in resistance value during actual use according to this value. All of our gas sensors can always determine the degree of air pollution at the same level.
The purpose of the present invention is to provide an inexpensive and highly reliable air purifier control device.
課題を解決するための手段
上記目的を達成するために本発明の空気清浄器の制御装
置は、空気の汚れを検知するガスセンサと、このガスセ
ンサの出力レベルを検出する検出手段と、前記ガスセン
サの感度レベルを入力する感度手段と、前記検出手段お
よび感度手段から出力される信号を入力しガスセンサの
抵抗値のばらつきを補正する感度補正手段と、基準の抵
抗値を記憶している記憶手段と、この記憶手段および前
記感度補正手段から出力される信号を入力し空気の汚れ
度合を判断する比較手段と、この比較手段から出力され
る信号にもとづいて出力を変化させる制御手段とによっ
て構成したものである。Means for Solving the Problems In order to achieve the above objects, the air purifier control device of the present invention includes a gas sensor for detecting air pollution, a detection means for detecting the output level of the gas sensor, and a sensitivity control device for the gas sensor. Sensitivity means for inputting a level; sensitivity correction means for inputting signals output from the detection means and the sensitivity means to correct variations in the resistance value of the gas sensor; and storage means for storing a reference resistance value; It is constructed by a comparison means that inputs the signal output from the storage means and the sensitivity correction means and determines the degree of air pollution, and a control means that changes the output based on the signal output from the comparison means. .
作 用
上記した構成において、ガスセンサが空気の汚れを検出
して検出手段に出力し、感度手段がガスセンサの感度を
入力し記憶しておき、感度補正手段が検出十段および感
度手段から出力される信号を入力しガスセンサの抵抗値
を補正し、比較手段によって空気の汚れ度合を判断し、
さらに制御手段によって比較手段から出力される信号に
もとづいて出力を変化させることができる。Operation In the above configuration, the gas sensor detects air pollution and outputs it to the detection means, the sensitivity means inputs and stores the sensitivity of the gas sensor, and the sensitivity correction means outputs from the ten detection stages and the sensitivity means. Input the signal, correct the resistance value of the gas sensor, and use the comparison means to determine the degree of air pollution.
Furthermore, the output can be changed by the control means based on the signal output from the comparison means.
実施例
以下、本発明の一実施例について第１図、第２図および
第３図を参照しながら説明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1, 2, and 3.
図に示すように、空気の汚れを検知するガスセンサ５の
出力レベルを検出する検出手段６と、ガスセンサ５の感
度レベ、ルを入力する感度手段子と、この感度手段７お
よび検出手段６から出力される信号を入力しガスセンサ
６の抵抗値のばらつきを補正する感度補正手段８と、基
準の抵抗値を記憶している記憶手段９と、この記憶手段
９および感度補正手段８から出力される信号を入力し空
気の汚れ度合を判断する比較手段１ｏと、この比較手段
１ｏから出力される信号にもとづいて出力を変化させる
制御手段１１によって構成されている。As shown in the figure, there is a detection means 6 for detecting the output level of the gas sensor 5 that detects air pollution, a sensitivity means element for inputting the sensitivity level of the gas sensor 5, and an output from the sensitivity means 7 and the detection means 6. a sensitivity correction means 8 which inputs a signal to correct variations in the resistance value of the gas sensor 6; a storage means 9 which stores a reference resistance value; and a signal output from the storage means 9 and the sensitivity correction means 8. The comparison means 1o inputs a signal to determine the degree of air pollution, and the control means 11 changes the output based on the signal output from the comparison means 1o.
なお、１２はファンなどを駆動する駆動手段である。Note that 12 is a driving means for driving a fan and the like.
つぎに、ガス濃度とガスセンサ６の抵抗値の変化量との
関係について述べる。Next, the relationship between the gas concentration and the amount of change in the resistance value of the gas sensor 6 will be described.
基準抵抗値（清浄な空気）をＲｏ、検出したい空気の抵
抗値をＲとし、イソブタン１１０００ｐｐを含んだ空気
の抵抗値の変化量を１とすると、ガス濃度と抵抗値の変
化量との関係は第３図に示すようになる。この図からも
明らかなようにガスセンサ６で検出することができる内
容は、ある基準のガス濃度に対してどれだけガス濃度が
変化したかという相対的なものである。そして、第２図
に示すようにガスセンサ６のばらつきによって同一ガス
濃度に対する抵抗値はＲａ、Ｒｂ、Ｒｃのように異なり
、ガス濃度の変化量Ｒ＆／ＲＯ声ｂ／／Ｒ０，Ｒｃ４゜
も当然具なる。しかし、これら抵抗値の変化量はガス濃
度の変化量に対して一次比例式で表わされる。例えばＲ
ａを基準とすると、Ｒｂ−αＸＲａ 。Assuming that the reference resistance value (clean air) is Ro, the resistance value of the air to be detected is R, and the amount of change in resistance value of air containing 11000 pp of isobutane is 1, the relationship between gas concentration and amount of change in resistance value is The result is as shown in FIG. As is clear from this figure, what can be detected by the gas sensor 6 is relative to how much the gas concentration has changed with respect to a certain reference gas concentration. As shown in FIG. 2, the resistance values for the same gas concentration differ as Ra, Rb, and Rc due to variations in the gas sensor 6, and the amount of change in gas concentration R Become. However, the amount of change in these resistance values is expressed by a linear proportional equation with respect to the amount of change in gas concentration. For example, R
Based on a, Rb-αXRa.
Ｒｃ＝βＸＲａ（ｃｔ、βはともに定数）で表わされる
。従って、あるガスセンサ６の抵抗値を基準とし、他の
ガスセンサ５のガス濃度に対する変化量を補正すること
により、センサ感度（ガス濃度の変化量に対する抵抗値
の変化量）がいくらばらついてもガス濃度の変化量に対
しては常にＲ／Ｒ０の関係から導きだすことができる。Rc=βXRa (ct and β are both constants). Therefore, by using the resistance value of a certain gas sensor 6 as a reference and correcting the amount of change in gas concentration of other gas sensors 5, the gas concentration The amount of change in can always be derived from the relationship R/R0.
上記構成において動作を説明すると、まず、ガヌセンサ
６の感度レベルを測定する。第１の方式例では製造工程
である定めだガス濃度での抵抗値Ｒｅと基準抵抗値Ｒ８
Ｃとを測定し、これらの比（Ｒｃ／Ｒｏｃ＝ｃ） か
らセンサ感度γを導きだしくｒ＝Ｃ×（ＲＣ／ＲＯＣ）
／（Ｒ＆／Ｒｏ））、感度手段７に記憶させる。第２の
方式例では現在の空気の汚れを検出する直前に、ある定
めたガス濃度での抵抗値Ｒ１と基準抵抗値Ｒ０とを測定
し、上述したようにガスセンサ６の感度を導きだし、感
度手段７に記憶させる。要は現在のガス濃度を検出する
までにガスセンサ５の感度を測定しておく方式であれば
よい。次に、基準抵抗値Ｒ０を記憶手段９に記憶する。To explain the operation in the above configuration, first, the sensitivity level of the Ganu sensor 6 is measured. In the first method example, the resistance value Re and the reference resistance value R8 at a predetermined gas concentration, which is the manufacturing process, are
Measure C and derive the sensor sensitivity γ from the ratio of these (Rc/Roc=c).r=C×(RC/ROC)
/(R&/Ro)) and is stored in the sensitivity means 7. In the second method example, immediately before detecting the current air pollution, the resistance value R1 and the reference resistance value R0 at a certain predetermined gas concentration are measured, and the sensitivity of the gas sensor 6 is derived as described above. It is stored in the means 7. In short, any method may be used as long as the sensitivity of the gas sensor 5 is measured before detecting the current gas concentration. Next, the reference resistance value R0 is stored in the storage means 9.
ガスセンサ５の感度はこのセンサ特・有の値であるため
一度測定しておけば以後定数として扱えるが、基準抵抗
値Ｒ０、すなわち清浄な空気の抵抗値は、その時々の環
境（例えば、絶対湿度、気圧、気温等）の違いによって
異なってしまう。このため、ガス濃度を検出したい環境
での基準抵抗値Ｒ８を記憶手段９に記憶する必要がある
。そして現在のガス抵抗値Ｒｄを検出し、検出手段６か
ら出力された信号と、感度手段７で定められたこのガス
センサ５の感度を感度補正手段８に入力し、ガスセンサ
６の抵抗値の補正を行なう。補正後の抵抗値をＲとする
と、Ｒ＝γｘＲｄで表わされる。この補正後の抵抗値Ｒ
と記憶手段９に記憶していた基準抵抗値Ｒ０を比較手段
１゜に入力し、比較（Ｒ／Ｒ０）することにより、現在
のガスの汚れ度合を判断している。この結果に基づき制
御手段１１が表示ランプおよびファンなどの駆動手段１
２を制御し、表示内容やファンの回転数などを変化させ
ている。The sensitivity of the gas sensor 5 is a value unique to this sensor, so once it has been measured, it can be treated as a constant from now on. However, the reference resistance value R0, that is, the resistance value of clean air, is determined by the environment at the time (for example, absolute humidity). , atmospheric pressure, temperature, etc.). Therefore, it is necessary to store the reference resistance value R8 in the environment in which the gas concentration is desired to be detected in the storage means 9. Then, the current gas resistance value Rd is detected, and the signal output from the detection means 6 and the sensitivity of this gas sensor 5 determined by the sensitivity means 7 are input to the sensitivity correction means 8, and the resistance value of the gas sensor 6 is corrected. Let's do it. When the resistance value after correction is R, it is expressed as R=γxRd. Resistance value R after this correction
and the reference resistance value R0 stored in the storage means 9 are input into the comparison means 1° and compared (R/R0), thereby determining the current degree of gas contamination. Based on this result, the control means 11 controls the driving means 1 such as an indicator lamp and a fan.
2 to change the display content and fan rotation speed.
発明の効果
以上の実施例の説明から明らかなように本発明の空気清
浄器の制御装置によれば、空気の汚れを検知するガスセ
ンサと、このガスセンサの出力レベルを検出する検出手
段と、前記ガスセンサの感度レベルを入力する感度手段
と、＠記検出手段および感度手段から出力される信号を
入力しガスセンサの抵抗値のばらつきを補正する感度補
正手段と、基準の抵抗値を記憶している記憶手段と、こ
の記憶手段および前記感度補正手段から出力される信号
を入力し空気の汚れ度合を判断する比較手段と、この比
較手段から出力される信号にもとづいて出力を変化させ
る制御手段とによって構成することにより、ガスセンサ
の感度ばらつきによる空気の汚れ度合の誤判断が少なく
なり、検知精度を向上でき、ガスセンサの歩留まりを少
なくすることができる。Effects of the Invention As is clear from the description of the embodiments above, the air cleaner control device of the present invention includes a gas sensor that detects air pollution, a detection means that detects the output level of this gas sensor, and the gas sensor. Sensitivity means for inputting the sensitivity level of the sensor, sensitivity correction means for inputting the signals output from the detection means and the sensitivity means to correct variations in the resistance value of the gas sensor, and storage means for storing the reference resistance value. A comparison means inputs the signals output from the storage means and the sensitivity correction means to determine the degree of air pollution, and a control means that changes the output based on the signal output from the comparison means. This reduces erroneous judgments of the degree of air pollution due to variations in the sensitivity of the gas sensor, improves detection accuracy, and reduces the yield of the gas sensor.
【図面の簡単な説明】
第１図は本発明の一実施例の空気清浄器の制御装置のブ
ロック回路図、第２図は同制御装置のガスセンサのガス
濃度の変化と抵抗値の変化量を示す特性図、第３図は同
制御装置のガスセンサの各種ガスにおけるガス濃度の変
化と抵抗値の変化量を示す特性図、第４図は従来例の空
気清浄器の制御装置のブロック回路図である。
５・・・・・・ガスセンサ、６・・・・・・検出手段、
７・・・・・・感度手段、８・・・・・・感度補正手段
、９・・・・・・記憶手段、１ｏ・・・・・・比較手段
、１１−・・・・・制御手段。
代理人の氏名 弁理士 小鍜治 明 ほか２名第２図[Brief Description of the Drawings] Fig. 1 is a block circuit diagram of a control device for an air purifier according to an embodiment of the present invention, and Fig. 2 shows a change in gas concentration and a change in resistance value of a gas sensor of the control device. Figure 3 is a characteristic diagram showing changes in gas concentration and resistance value changes for various gases in the gas sensor of the control device, and Figure 4 is a block circuit diagram of a conventional air purifier control device. be. 5...Gas sensor, 6...Detection means,
7... Sensitivity means, 8... Sensitivity correction means, 9... Storage means, 1o... Comparison means, 11-... Control means . Name of agent: Patent attorney Akira Okaji and two others Figure 2
Claims (1)
の出力レベルを検出する検出手段と、前記ガスセンサの
感度レベルを入力する感度手段と、前記検出手段および
感度手段から出力される信号を入力しガスセンサの抵抗
値のばらつきを補正する感度補正手段と、基準の抵抗値
を記憶している記憶手段と、この記憶手段および前記感
度補正手段から出力される信号を入力し空気の汚れ度合
を判断する比較手段と、この比較手段から出力される信
号にもとづいて出力を変化させる制御手段とによって構
成された空気清浄器の制御装置。A gas sensor that detects air pollution, a detection means that detects the output level of this gas sensor, a sensitivity means that inputs the sensitivity level of the gas sensor, and a resistance of the gas sensor that inputs the signals output from the detection means and the sensitivity means. Sensitivity correction means for correcting variations in values; storage means for storing reference resistance values; and comparison means for inputting signals output from the storage means and the sensitivity correction means to determine the degree of air pollution. and a control means for changing the output based on the signal output from the comparison means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31853990A JP3208567B2 (en) | 1990-11-22 | 1990-11-22 | Air purifier control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31853990A JP3208567B2 (en) | 1990-11-22 | 1990-11-22 | Air purifier control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04190826A true JPH04190826A (en) | 1992-07-09 |
| JP3208567B2 JP3208567B2 (en) | 2001-09-17 |
Family
ID=18100257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31853990A Expired - Fee Related JP3208567B2 (en) | 1990-11-22 | 1990-11-22 | Air purifier control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3208567B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148678A (en) * | 2015-10-13 | 2015-12-16 | 中国石油化工股份有限公司 | Automatic leaked hydrogen sulfide scavenging method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101535557B1 (en) * | 2008-04-28 | 2015-07-09 | 코웨이 주식회사 | Air cleaner having sensitivity adjustment function and control method thereof |
-
1990
- 1990-11-22 JP JP31853990A patent/JP3208567B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148678A (en) * | 2015-10-13 | 2015-12-16 | 中国石油化工股份有限公司 | Automatic leaked hydrogen sulfide scavenging method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3208567B2 (en) | 2001-09-17 |
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