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Absolute water potential calculation method and cloud atlas generation method suitable for grain condition monitoring

A calculation method and technology of water potential, applied in the field of absolute water potential calculation and cloud map generation, can solve the problems of low precision and complex calculation of absolute water potential, and achieve the effect of easy analysis

Inactive Publication Date: 2017-06-06
JILIN UNIV +1
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Problems solved by technology

[0003] The invention provides a calculation method of absolute water potential suitable for grain situation monitoring, which overcomes the defects of complicated calculation and low precision of existing absolute water potential

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  • Absolute water potential calculation method and cloud atlas generation method suitable for grain condition monitoring
  • Absolute water potential calculation method and cloud atlas generation method suitable for grain condition monitoring
  • Absolute water potential calculation method and cloud atlas generation method suitable for grain condition monitoring

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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0027] The invention provides a method for generating an absolute water potential cloud map suitable for grain situation monitoring, and the specific steps are as follows:

[0028] Step 1 S110, build a multi-parameter monitoring sensor and monitoring system for network grain conditions.

[0029] Such as figure 2 , image 3 As shown, a plurality of temperature measuring cables 2 are arranged in the granary 1, the temperature measuring cables 2 are arranged in the vertical direction, and the plurality of temperature measuring cables 2 are distributed in a uniform grid on the cross section of the granary 1. On each temperature measuring cable 2, a plurality of humidity sensors 3 are arranged from top to bottom. When the granary is full of grain, the temperature measuring cab...

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Abstract

The invention discloses an absolute water potential calculation method suitable for grain condition monitoring. The absolute water potential calculation method comprises the following steps that: temperature and humidity measurement devices are arranged at multiple measurement points in the granary space so as to acquire the temperature value t and the humidity value M of the grain of the measurement points; and the absolute water potential value E<g> of the grain of each measurement point is calculated: E<g>=RT<alpha>ln(EAH<g>)=[8.31x(t+273)xln(EAH<g>x133.3)] / 18, wherein R is the universal gas constant 8.31J / Mol, T<alpha> is absolute temperature of the grain, and EAH<g> is the balance absolute humidity value of the grain and the unit is mmHg. The invention also provides an absolute water potential cloud atlas generation method suitable for grain condition monitoring. The absolute water potential values of multiple prediction points on a prediction section are calculated by using an interpolation algorithm based on the absolute water potential value E<g> of the grain of the measurement points; and an absolute water potential cloud atlas on the prediction section is drawn. The moisture and thermodynamic parameters of the grain bulk are fused to obtain an absolute water potential field and form the cloud atlas so that multiple complex physical fields of the grain bulk can be integrated in one atlas to be expressed in a unified way, and thus analysis of the current state of the grain bulk and the historical evolution rule is facilitated.

Description

technical field [0001] The invention belongs to the technical field of granary information detection, and in particular relates to an absolute water potential calculation method and a cloud image generation method suitable for grain situation monitoring. Background technique [0002] Grain situation analysis in granaries is mostly based on single-parameter detection such as temperature and humidity, and insufficient attention is paid to the coupling effect of multiple parameters. The absolute water potential of grain is actually coupled with the comprehensive parameters of temperature and humidity. Chinese Patent Application No. 201410265033.9 discloses "A Method for Managing and Controlling Granary Mechanical Ventilation Operations Using Water Potential Maps", and proposes the management and control of granary mechanical ventilation operations based on water potential maps, but it does not provide a method for generating absolute water potential cloud maps . At the same t...

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Application Information

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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 吴文福陈龙秦骁刘哲吴新怡张亚秋韩峰徐岩尹君张忠杰吴子丹
Owner JILIN UNIV
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