JPS6162852A - Humidity detector for automobile - Google Patents
Humidity detector for automobileInfo
- Publication number
- JPS6162852A JPS6162852A JP59184672A JP18467284A JPS6162852A JP S6162852 A JPS6162852 A JP S6162852A JP 59184672 A JP59184672 A JP 59184672A JP 18467284 A JP18467284 A JP 18467284A JP S6162852 A JPS6162852 A JP S6162852A
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- humidity detector
- temperature
- detector
- detection
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 abstract 1
- 239000005357 flat glass Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は湿度検出器に係り、特に窓ガラス錘り防止シス
テムに好適な絶対湿度検出器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a humidity detector, and particularly to an absolute humidity detector suitable for a window glass sink prevention system.
従来の湿度検出器は雰囲気温度によって応答速度が変化
、低温になると検出応答が遅くなる。従って特開昭５６
−６３５１３に記載されるように窓ガラス曇シ防止シス
テムに用いるときは、曇り寸前あるいは曇り始りである
ことを判断するために、素早く室内の絶対湿度を検出す
ることが必要であるにもかかわらず、比較的低温である
梅雨時には窓ガラスの曇り状態が強くなる不具合が起る
。The response speed of conventional humidity detectors changes depending on the ambient temperature, and the detection response slows down when the temperature is low. Therefore, JP-A-56
-63513, when used in a window glass fog prevention system, it is necessary to quickly detect the absolute humidity in the room in order to determine that it is on the verge of fogging or is beginning to fog. First, during the rainy season when the temperature is relatively low, there is a problem that the window glass becomes foggy.
本発明の目的は、加温することによって湿度検出器の感
湿材と水分子との反応速度を早くして、湿度検出応答速
度を早くできる湿度検出器を提供するにある。An object of the present invention is to provide a humidity detector that can increase the reaction rate between the moisture sensitive material of the humidity detector and water molecules by heating, thereby increasing the humidity detection response rate.
湿度検出器の雰囲気を高温にして、早い応答で相対湿度
を検知すると共にそこの空気温度を検知して絶対湿度を
求める。The atmosphere of the humidity detector is set to a high temperature, and the relative humidity is detected with a quick response, and the air temperature there is also detected to determine the absolute humidity.
以下、本発明の一実施例を第１図から第３図によって説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
車両１００は車室１０１を空調するエアコンユニット５
０と、それに接続してエンジン１０４の冷却水１１０を
循環する管１０５を有する。このエアコンユニット５０
は内蔵するヒータコア５１や蒸発器５３、プロワ−５４
などで構成する。The vehicle 100 has an air conditioner unit 5 that air-conditions the vehicle interior 101.
0 and a pipe 105 connected thereto for circulating cooling water 110 of the engine 104. This air conditioner unit 50
The built-in heater core 51, evaporator 53, and blower 54
Consists of etc.
このヒータコア５１に接続する金属製のパイプ５２には
湿度検出器１０が締め具８で固設される。A humidity detector 10 is fixed to a metal pipe 52 connected to the heater core 51 with a fastener 8.
湿度検出器１０は車室１０１に配置してあって、高分子
感湿材を用いた温度検出素子１と感温抵抗素子２を実装
したプリント基板３がベース５に固定され、更に金網状
のカバー４で穏われている。The humidity detector 10 is arranged in a vehicle compartment 101, and a printed circuit board 3 on which a temperature detection element 1 and a temperature-sensitive resistance element 2 made of a polymer moisture-sensitive material are mounted is fixed to a base 5, and a wire mesh-like Cover 4 keeps it calm.
検出調子１，２からの電気的信号は線６とコネクタ７で
電子回路２０に接続している。The electrical signals from the detectors 1 and 2 are connected to an electronic circuit 20 by wires 6 and connectors 7.
この温度検出素子１は、相対湿度に対応して電気抵抗値
が変化する特性をもっており、電気的に相対湿度を表わ
せる。この相対湿度がステップ変化するときの検出応答
速度は第５図のようにＶ囲気の温度にＪ−って異なり、
高温側で早い応答を現わすものである。This temperature detection element 1 has a characteristic that its electrical resistance value changes in response to relative humidity, and can electrically represent relative humidity. As shown in Figure 5, the detection response speed when the relative humidity changes step by step varies depending on the temperature of the surrounding air.
It exhibits a fast response on the high temperature side.
本湿度検出器１０を用いる窓ガラス舶り防止システムは
エアコンが温調しているとき、つ１り冷却水１１０が循
環している状態で機能している。The window glass drift prevention system using the present humidity detector 10 functions in a state where the cooling water 110 is circulating when the air conditioner is controlling the temperature.
１これによって湿度検出器１０は雰囲気温度を車室内の
平均温度よりも高い温度に維持されて作動するので早い
応答速度で相対湿度ＲＨチを検出する、と同時に温度検
出素子２で雰囲気温度Ｔｓを検出する。これらの検出量
を電気信号で受けた電子回路２０では、絶対湿度ＡＨを
嘗゛出してから、車室内の露点温度Ｔ−を求める。更に
温度検出器３０で図示しない窓ガラスの内面温度Ｔ、を
検知することによって、露点温度Ｔｄ〉窓ガラス内面温
度Ｔヨであるときは窓ガラスが結露して曇りを生ずるこ
とを判断できる。従って、窓ガラス曇り防止システムは
、常に窓ガラスＴｔ＞露点温度Ｔ−の状態を維持するよ
うに除湿、デフロストあるいは換気を起動して曇シ初期
に曇り防止を行なうことができる。このように、特に湿
度検出応答速度を早くして、窓ガラス葎ｐ初期を知り、
必要最小に除湿、デフ０ストあるいは換気を行なうこと
ができる。1 As a result, the humidity detector 10 operates while maintaining the ambient temperature at a higher temperature than the average temperature inside the vehicle, so it can detect the relative humidity RH with a fast response speed, and at the same time, the temperature detecting element 2 detects the ambient temperature Ts. To detect. The electronic circuit 20 receives these detected amounts as electrical signals, reads the absolute humidity AH, and then determines the dew point temperature T- in the vehicle interior. Further, by detecting the inner surface temperature T of the window glass (not shown) with the temperature detector 30, it can be determined that the window glass is fogged due to condensation when the dew point temperature Td>window glass inner surface temperature T yo. Therefore, the window glass fogging prevention system can prevent fogging at the initial stage of fogging by starting dehumidification, defrosting, or ventilation so as to always maintain the condition that windowpane Tt>dew point temperature T-. In this way, by particularly increasing the humidity detection response speed, it is possible to know the initial stage of window glass plating,
Dehumidification, defrosting, or ventilation can be performed to the minimum necessary.
本実施例によれば、自から発熱体をもつことなく、エン
ジン余熱利用によって、安全で小形になる省エネ形にま
とまり、かつ検知応答速度を早くしだ車室内の絶対湿度
を検知できる効果がある。According to this embodiment, by utilizing the residual heat of the engine without having a heating element of its own, it is possible to create a safe, compact and energy-saving form, and also has the effect of increasing the detection response speed and detecting the absolute humidity in the vehicle interior. .
本発明によれば、雰囲気を加温することによって早い検
出応答速度を得られる効果がある。According to the present invention, there is an effect that a faster detection response speed can be obtained by heating the atmosphere.
第１図は本発明に係る湿度検出器を取付けた車両の図、
第２図は本発明に係る湿度検出器とエアコンユニットの
配置図、第３図は本発明に係る湿度検出器内部断面と結
線を示す図、第４図及び第５図は高分子感湿材を用いる
湿度検出器の検出応答をステップ湿度変化に対して示す
図、第６図は相対湿度と空気温度とから窓ガラス曇り防
止制御する説明図である。
１・・・湿度検出素子、２・・・温度検出素子、３・・
・プリント基板、５２・・・管、１１０・・・工／ジン
冷却水。FIG. 1 is a diagram of a vehicle equipped with a humidity detector according to the present invention;
Fig. 2 is a layout diagram of the humidity detector and air conditioner unit according to the present invention, Fig. 3 is a diagram showing the internal cross section and wiring of the humidity detector according to the present invention, and Figs. 4 and 5 are polymer moisture sensitive materials. FIG. 6 is an explanatory diagram showing the detection response of a humidity detector using a humidity sensor with respect to a step humidity change. FIG. 6 is an explanatory diagram of window glass fog prevention control based on relative humidity and air temperature. 1... Humidity detection element, 2... Temperature detection element, 3...
- Printed circuit board, 52... tube, 110... engineering/gin cooling water.
Claims (1)
空間の温度を検出する温度検出素子と、画素子の出力か
ら絶対湿度を求める手段とを有するものにおいて、前記
画素子の配置された空間を加熱する加熱手段を設けたこ
とを特徴とする自動車用湿度検出器。 ２、特許請求の範囲第１項に記載した発明において、前
記被測定空間が自動車の車室内であって、前記加熱手段
が自動車用空気調和装置の加熱源となるヒータコアへの
エンジン冷却水配送パイプであることを特徴とする自動
車用湿度検出器。[Scope of Claims] 1. A device comprising a humidity detection element that detects the relative humidity of a space to be measured, a temperature detection element that detects the temperature of the same space, and means for determining absolute humidity from the output of the pixel element, A humidity detector for an automobile, characterized in that it is provided with a heating means for heating a space in which a pixel element is arranged. 2. In the invention set forth in claim 1, the space to be measured is a vehicle interior of an automobile, and the heating means is an engine cooling water delivery pipe to a heater core serving as a heating source of an automobile air conditioner. An automotive humidity detector characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59184672A JPS6162852A (en) | 1984-09-05 | 1984-09-05 | Humidity detector for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59184672A JPS6162852A (en) | 1984-09-05 | 1984-09-05 | Humidity detector for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6162852A true JPS6162852A (en) | 1986-03-31 |
| JPH0378939B2 JPH0378939B2 (en) | 1991-12-17 |
Family
ID=16157336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59184672A Granted JPS6162852A (en) | 1984-09-05 | 1984-09-05 | Humidity detector for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018128348A (en) * | 2017-02-08 | 2018-08-16 | 株式会社デンソー | Absolute humidity sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5663513A (en) * | 1979-10-31 | 1981-05-30 | Diesel Kiki Co Ltd | Method and apparatus for preventing clouding inside car glass and control moisture for car-air conditioner |
-
1984
- 1984-09-05 JP JP59184672A patent/JPS6162852A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5663513A (en) * | 1979-10-31 | 1981-05-30 | Diesel Kiki Co Ltd | Method and apparatus for preventing clouding inside car glass and control moisture for car-air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018128348A (en) * | 2017-02-08 | 2018-08-16 | 株式会社デンソー | Absolute humidity sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0378939B2 (en) | 1991-12-17 |
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