Grain moisture online detection circuit

Abstract

The invention discloses a grain moisture online detection circuit. The grain moisture online detection circuit comprise a power supply circuit, a constant-current source circuit, a single-chip microcomputer system, a signal amplification circuit, a Nixie tube display circuit, a motor anddrying machine control system, a control knob, a key circuit and a temperature compensation circuit, wherein the signal amplification circuit, the Nixie tube display circuit, the motor and drying machine control system, the control knob, the key circuit and the temperature compensation circuit are connected with the single-chip microcomputer system through data lines, the power supply circuit is connected with the other circuits, the constant-current source circuit is formed by connecting a voltage stabilizing circuit and a constant-current source measuring circuit, and the output end of the constant-current source circuit is connected with the signal amplification circuit. The grain moisture online detection circuit has the advantages that the measuring response speed is high, precision can be as high as + / -0.5%, manpower source waste can be reduced, the production cost is reduced, measuring results are accurate and the practicality is high.

Description

technical field [0001] The present invention relates to a grain detection circuit, in particular to a grain moisture detection circuit in agricultural products. Background technique [0002] Grain drying is an important step in the safe storage of grain. The rapid drying of grain requires the use of grain drying equipment, and in the process of grain drying, the online detection of grain moisture and the control of the dryer are the primary issues restricting the grain drying control system. Due to the influence of many factors, it is difficult for traditional methods to realize real-time detection of moisture in the grain drying process and intelligent control of drying equipment. Therefore, the application of modern technical means and theoretical methods to detect grain moisture and solve the problems of grain moisture detection in the intelligent control system of grain drying equipment is of great significance for improving the quality and economic benefits of grain du...

AI Technical Summary

Problems solved by technology

Since the detection process is only controlled manually, the moisture content of the dried grain fluctuates in a large range, and there are many chances of loss of control, which directly affects the stability of grain yield and quality.

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