SU124172A1 - Humidity sensor - Google Patents

Humidity sensor

Info

Publication number
SU124172A1
SU124172A1 SU624205A SU624205A SU124172A1 SU 124172 A1 SU124172 A1 SU 124172A1 SU 624205 A SU624205 A SU 624205A SU 624205 A SU624205 A SU 624205A SU 124172 A1 SU124172 A1 SU 124172A1
Authority
SU
USSR - Soviet Union
Prior art keywords
humidity
humidity sensor
change
rate
signal proportional
Prior art date
Application number
SU624205A
Other languages
Russian (ru)
Inventor
С.П. Колосов
Original Assignee
С.П. Колосов
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by С.П. Колосов filed Critical С.П. Колосов
Priority to SU624205A priority Critical patent/SU124172A1/en
Application granted granted Critical
Publication of SU124172A1 publication Critical patent/SU124172A1/en

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  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Description

Известны датчик-н влажности, в которых чувствительным элементом служит гигроскопическа  пленка, мен юща  свое электрическое сопротивление в зависимости от влажности. При использовании подобных датчиков в системах автоматического регулировани  дл  повышени  эффективности регулировани  в управл ющий сигнал ввод т составл ющую , пропорциональную скорости изменени  влажности. Недостаток подобных устройств состоит в сложности получени  сигнала, пропорционального скорости изменени  влажности, так как получение указанной составл ющей путем дифференцировани  сигнала рассогласовани  затруднительно вследствие относительно медленного изменени  влажности контролируемой среды.The sensor of humidity is known, in which the sensitive element is a hygroscopic film, which changes its electrical resistance depending on humidity. When using such sensors in automatic control systems, in order to increase the control efficiency, a component is introduced into the control signal proportional to the rate of change of humidity. A disadvantage of such devices is the difficulty of obtaining a signal proportional to the rate of change of humidity, since obtaining this component by differentiating the error signal is difficult due to the relatively slow change in humidity of the controlled medium.

В описываемом датчике этот недостаток устранен применением двух влагочувствительных элементов с различными посто нными времени , включенных в дифференциальную схему.In the sensor described, this disadvantage is eliminated by using two moisture sensitive elements with different time constants included in the differential circuit.

Схема включени  влагочувствительных элементов показана на чертеже.A circuit for incorporating moisture sensitive elements is shown in the drawing.

Чувствительные элементы 1 -2, имеющие одинаковые начальные сопротивлени  и влажиостные коэф(1)ициенты, но различные посто нные времени, соединены между собой последовательно и подключены к концам вторичной обмотки трансформатора питани  5. Между средней точкой вторичной обмотки трансформатора 3 И точкой соединени  элементов 7 и 2 включена активна  нагрузка 4, ; которой снимают сигнал, пропорциональный скорости изменени  влажности, используемый в качестве форсирующего сигнала в регул торе влажности.Sensitive elements 1-2, having the same initial resistance and humidity coefficients (1), but different time constants, are interconnected in series and connected to the ends of the secondary winding of the power transformer 5. Between the middle point of the secondary winding of the transformer 3 and the connection point of the elements 7 and 2 active load 4 is enabled; where a signal proportional to the rate of change of humidity is used, which is used as a boost signal in the humidity controller.

Предмет изобретени Subject invention

Датчик влажности, в котором применена гигроскошгческа  пленка, пен юща  свое электрическое сопротивление в зависимости от sJiaxности , отличающийс  тем, что, с целые получени  сигнала, пропорционального скорости изменени  влажности, в нем применено два дифференциально включенных влагочувствительных элемента с разными посто нными времени,A humidity sensor in which a hygroscopic film is applied, foaming its electrical resistance depending on its sensitivity, characterized in that, with a whole receiving signal proportional to the rate of change of humidity, it uses two differentially activated moisture sensitive elements with different time constants,

SU624205A 1959-04-03 1959-04-03 Humidity sensor SU124172A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU624205A SU124172A1 (en) 1959-04-03 1959-04-03 Humidity sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU624205A SU124172A1 (en) 1959-04-03 1959-04-03 Humidity sensor

Publications (1)

Publication Number Publication Date
SU124172A1 true SU124172A1 (en) 1959-11-30

Family

ID=48395663

Family Applications (1)

Application Number Title Priority Date Filing Date
SU624205A SU124172A1 (en) 1959-04-03 1959-04-03 Humidity sensor

Country Status (1)

Country Link
SU (1) SU124172A1 (en)

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