air humidity indicator circuit

A technology indicating circuit and air humidity, applied in the direction of material resistance, etc., can solve the problems that cannot be popularized in ordinary households, expensive equipment, etc., and achieve the effect of simple structure and reduced production cost

Active Publication Date: 2017-08-04
重庆市志益鑫电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an air humidity indicating circuit to solve the problem that current monitoring air humidity equipment is quite expensive and cannot be popularized in ordinary families

Method used

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Embodiment Construction

[0021] The present invention will be described in further detail below by means of specific embodiments:

[0022] The reference signs in the accompanying drawings include: resistor R1, humidity sensitive resistor R2, resistor R3, humidity sensitive resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, variable resistor RP1, variable resistor RP2 , variable resistor RP3, inductor L1, inductor L2, operational amplifier IC1, operational amplifier IC2, operational amplifier IC3, operational amplifier IC4, capacitor C1, capacitor C2, voltmeter U1, Zener diode D1.

[0023] The air humidity indicating circuit includes a humidity detection circuit, a signal amplification circuit, an impedance transformation circuit and a display circuit; the first output end of the humidity detection circuit is connected to the first input end of the impedance transformation circuit; the second output end of the humidity detection circuit is connected to the signal amplification...

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PUM

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Abstract

This patent application discloses an air humidity indicating circuit, which belongs to the field of test circuits. The air humidity indicating circuit includes a humidity detection circuit, a signal amplification circuit, an impedance transformation circuit and a display circuit; the first output end of the humidity detection circuit is connected to the first input end of the impedance transformation circuit; the second output end of the humidity detection circuit is connected to the signal amplification The second input end of the circuit; the third output end of the humidity detection circuit is connected to the third input end of the signal amplifying circuit; the fourth output end of the signal amplifying circuit is connected to the fourth input end of the display circuit; the fifth output end of the impedance transformation circuit Connect to the fifth input terminal of the display circuit.

Description

technical field [0001] The invention relates to the field of testing circuits, in particular to an air humidity indicating circuit. Background technique [0002] Air humidity is one of the important parameters of air quality. If the air humidity is too low, the air is very dry. Too dry air can easily make people's skin tight or even itchy. At the same time, too dry air can easily cause fire accidents. If the air humidity is too high, the air will be very humid, which will easily cause eczema. It makes people's body too humid, and being in a humid environment for a long time can easily lead to various skin diseases. Moreover, the humid environment is conducive to the growth of various bacteria, which increases the number of bacteria in the environment and causes frequent diseases, and the items are not easy to store and are easy to rot. Therefore, only air within a certain humidity range is conducive to human survival. It is very necessary to monitor the current humidity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/04
Inventor 胡红生
Owner 重庆市志益鑫电子科技有限公司
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