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On-line grain moisture measuring device

A technology of grain moisture and measuring device, applied in the direction of material capacitance, etc., can solve the problems of difficult to overcome the influence of temperature and material type factors, and achieve the effect of high flexibility and practicability, simple circuit and low price

Inactive Publication Date: 2012-01-25
ZHEJIANG UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an online grain moisture measurement device, which makes up for the shortcomings of other methods for real-time measurement of grain moisture, and also solves the problem that the existing capacitive moisture measurement methods are difficult to overcome the influence of temperature and material type factors

Method used

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Embodiment Construction

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like figure 1 As shown, the present invention includes a capacitive sensor, a signal conversion circuit, a temperature signal acquisition circuit, a single-chip processing unit, a button and a liquid crystal display; the capacitive sensor is connected with the single-chip processing unit through the signal conversion circuit, and the temperature signal acquisition circuit is directly connected with the single-chip processing unit. The buttons and the liquid crystal display are respectively connected with the single-chip processing unit.

[0023] like figure 2 As shown, the signal conversion circuit is composed of the CAV444 chip and its surrounding circuits. The capacitive sensor for measuring moisture is connected to the 12th pin of the CAV444 chip, and the capacitance signal of the capacitive sensor is processed by the CAV444. The 5th pin is ou...

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Abstract

The invention discloses an on-line grain moisture measuring device which comprises a capacitance sensor, a signal converting circuit, a temperature signal acquiring circuit, a singlechip processing unit, a key and a liquid crystal display, wherein the capacitance sensor is connected with the singlechip processing unit through the signal converting circuit; the temperature signal acquiring circuit is directly connected with the singlechip processing unit; and the key and the liquid crystal display are respectively connected with the singlechip processing unit. The on-line grain moisture measuring device has the advantages that the circuits are simple, only an AT89S5X series chip and simple peripheral components are used, the influences of factors such as temperature and grain species on the moisture content measurement are considered by utilizing software compensation coefficients, and the device has higher flexibility and practical applicability. The practical and low-price on-line gain moisture measuring device is capable of measuring agricultural granular products, such as paddy, rice, soybean, barley, wheat, corn, and the like.

Description

technical field [0001] The invention relates to a grain moisture measuring device, in particular to an online real-time measuring grain moisture device using a capacitance method. Background technique [0002] Grain drying is an important link in the processing of grains and agricultural products. According to statistics, the annual loss of crops from mold and rot in my country reaches 5 million to 10 million tons, which is estimated to account for 1.5% to 3% of the total grain output. In southern provinces with a long rainy season (such as Jiangsu, Zhejiang, Anhui, Hubei, Shanghai, etc.), the annual loss of grain from mold and rot is as high as 10%. But so far, grain drying is still a relatively weak link in my country's agricultural production. The main problems are: insufficient drying capacity, low efficiency and poor quality of the dried material. The development of perfect automatic control equipment is of great significance to maintain the quality of grains after d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
Inventor 王剑平高飞盖玲
Owner ZHEJIANG UNIV
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