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Grain humidity detecting circuit

A humidity detection circuit, food technology, applied in the direction of measuring device, material capacitance, material analysis by electromagnetic means, etc., can solve the problems of high production cost, complex circuit, poor measurement accuracy, etc., achieve low cost, simple circuit, easy Achieved effect

Inactive Publication Date: 2017-11-17
SUZHOU CRABCHINA E COMMERCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of poor measurement accuracy, electronic humidity measuring device, complex circuit and high production cost of existing human hands or teeth bites to measure grain humidity.

Method used

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  • Grain humidity detecting circuit

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0014] like figure 1 As shown, the grain humidity detection circuit of the present invention includes a storage battery G1, a 555 time base chip U1, a voltmeter V1 and a plate capacitor C1. The positive electrode of the storage battery G1 is connected in series with a switch S1, and is respectively connected to one end of the resistance R2 through the resistance R1. , the fourth and eighth pins of the 555 time base chip U1, and one end of the resistor R3 are connected, and the other end of the resistor R3 is respectively connected with one end of the resistor R4 and the seventh pin of the 555 time base chip U1, and the resistor The other end of R4 is connected to the second pin of the 555 time ...

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Abstract

The invention discloses a grain humidity detecting circuit which comprises a storage battery G1, a 555 time-based chip U1, a voltmeter V1 and a plate capacitor C1. According to the grain humidity detecting circuit, when granular grain is placed between two plates of the plate capacitor, a medium is changed into granular objects from air originally, changes of medium losses are caused, the capacitance is increased, the oscillation frequency of a multivibrator composed of the 555 time-based chip changes, and the oscillation frequency changes according to different grain humidities, and therefore the grain humidities are converted into voltage values to be indicated through the voltmeter, the measured humidities of the grain can be rapidly, accurately and visually given, and the circuit is simple, easy to obtain and low in cost and has the good application prospect.

Description

technical field [0001] The invention relates to a grain humidity detection circuit, which belongs to the technical field of electronic circuits. Background technique [0002] Food is the basic guarantee of people's life and needs a lot of storage. When storing a large amount of grain, it is necessary to ensure the dryness of the grain so as to facilitate long-term storage. At present, many places still use traditional manual measurement methods such as manual touch or teeth bite, which are easily affected by the weather and have poor measurement accuracy. Moreover, the electronic humidity measuring devices on the market have complex circuits and high production costs, which are not convenient for mass production and widespread promotion. Contents of the invention [0003] The purpose of the present invention is to overcome the problems of poor measurement accuracy, electronic humidity measuring device, complex circuit and high production cost in existing human hand touch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
CPCG01N27/223G01N27/228
Inventor 杨令东
Owner SUZHOU CRABCHINA E COMMERCE CO LTD