JPH0322960U

JPH0322960U -

Info

Publication number: JPH0322960U
Application number: JP8208389U
Authority: JP
Priority date: 1989-07-12
Filing date: 1989-07-12
Publication date: 1991-03-11

Description

[Brief explanation of the drawing]

第１図はこの考案の第１の実施例を示す機能ブ
ロツク図、第２図は同上の構成図、第３図は同上
のデミスト制御例を示すフローチヤート、第４図
は湿度センサの出力特性線図、第５図は同上の曇
り判定値ＨＭの特性線図、第６図はこの考案の第
２の実施例を示す機能ブロツク図、第７図は同上
のデミスト制御例を示すフローチヤート、第８図
は同上の曇り判定値ＨＭ′の特性線図である。２０……窓ガラス、２４……マイクロコンピユ
ータ、３０……湿度センサ、３１……温度センサ
、１００……窓ガラス内面相対湿度検出手段、２
００……湿度変化率演算手段、３００……曇り判
定値演算手段、４００……曇り判定手段、５００
……制御手段、６００……窓ガラス内面温度検出
手段。 Fig. 1 is a functional block diagram showing a first embodiment of this invention, Fig. 2 is a block diagram of the same as above, Fig. 3 is a flowchart showing an example of demist control as above, and Fig. 4 is an output characteristic of the humidity sensor. 5 is a characteristic diagram of the cloudy judgment value HM same as above, FIG. 6 is a functional block diagram showing a second embodiment of this invention, FIG. 7 is a flowchart showing an example of demist control same as above, FIG. 8 is a characteristic diagram of the cloudy judgment value HM' same as above. 20...Window glass, 24...Microcomputer, 30...Humidity sensor, 31...Temperature sensor, 100...Window glass inner surface relative humidity detection means, 2
00...Humidity change rate calculation means, 300...Cloudy determination value calculation means, 400...Cloudy determination means, 500
. . . Control means, 600 . . . Window glass inner surface temperature detection means.

Claims

[Scope of Claim for Utility Model Registration] 1. Window glass inner surface relative humidity detection means for detecting the relative humidity on the inner surface of window glass, and humidity change rate calculation means for calculating the rate of change of the humidity signal from this window glass inner surface relative humidity detection means. and a cloudy judgment value calculating means for calculating a cloudy judgment value based on the rate of change obtained by this humidity change rate calculating means; It consists of a cloudy determination means that determines whether or not there is cloudy based on the humidity obtained by the humidity detection means, and a control means that controls activation and stop of demist control by the air conditioner according to the determination result of the cloudy determination means. A demist control device for an automotive air conditioner, characterized by: 2. Window glass inner surface relative humidity detection means for detecting the relative humidity on the inner surface of the window glass; Humidity change rate calculation means for calculating the rate of change of the humidity signal from the window glass inner surface relative humidity detection means; Window glass inner surface temperature detection means for detecting; fogging judgment value calculating means for calculating a fogging judgment value from the temperature from the temperature detecting means and the rate of change from the humidity change rate calculating means; and the fogging judgment value calculating means. a cloudy determination means for determining whether or not there is cloudy based on the cloudiness determination value obtained by the window glass and the humidity obtained by the window glass inner surface relative humidity detection means; A demist control device for an automobile air conditioner, comprising a control means for controlling activation and stop of demist control.