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Method and system for granary detection based on polynomial model with two circles of standard deviation on the bottom surface

A detection method and standard deviation technology, applied in the field of granary detection and system based on the polynomial model of the standard deviation of two circles on the bottom surface

Active Publication Date: 2021-04-09
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a granary detection method and system based on the two-circle standard deviation polynomial model of the bottom surface, so as to solve the problem of how to further improve the detection accuracy on the basis of the existing technology

Method used

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  • Method and system for granary detection based on polynomial model with two circles of standard deviation on the bottom surface
  • Method and system for granary detection based on polynomial model with two circles of standard deviation on the bottom surface
  • Method and system for granary detection based on polynomial model with two circles of standard deviation on the bottom surface

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Experimental program
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Effect test

Embodiment 1

[0063] 1. Testing Theoretical Models

[0064] Through the force analysis of grain piles, it can be deduced that the theoretical detection model of grain quantity in grain storage is:

[0065]

[0066] Among them, A B is the area of ​​the bottom surface of the grain pile, K C is the model parameter, K c =C B / A B , C B is the circumference of the bottom surface of the grain pile, H is the height of the grain pile, f F is the average coefficient of friction between the side of the grain pile and the side of the granary, is the mean pressure on the bottom surface, is the average side pressure of the grain pile, make:

[0067]

[0068] in, is the average friction force per unit area on the side of the grain pile. Then there are:

[0069]

[0070] It can be seen from formula (3) that the weight of the grain pile is related to and only the mean value of the pressure on the bottom surface of the grain pile Average friction force per unit area It is rela...

Embodiment 2

[0218] 1. Testing Theoretical Models

[0219] Through the force analysis of grain piles, it can be deduced that the theoretical detection model of grain quantity in grain storage is:

[0220]

[0221] Among them, A B is the area of ​​the bottom surface of the grain pile, K C is the model parameter, K c =C B / A B , C B is the circumference of the bottom surface of the grain pile, H is the height of the grain pile, f F is the average coefficient of friction between the side of the grain pile and the side of the granary, is the mean pressure on the bottom surface, is the average side pressure of the grain pile, make:

[0222]

[0223] in, is the average friction force per unit area on the side of the grain pile. Then there are:

[0224]

[0225] It can be seen from formula (30) that the weight of the grain pile is related to and only related to the average pressure of the bottom surface of the grain pile Average friction force per unit area It is re...

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Abstract

The invention relates to a granary detection method and system based on the two-circle standard deviation polynomial model of the bottom surface. The present invention aims at the urgent need for on-line detection of the national stored grain quantity and the specific requirements of the detection. The detection model of the quantity of stored grain in grain storage based on the standard deviation of the output value of the two-circle pressure sensor. The core technology of the present invention includes two parts: the model item construction based on the standard deviation of the output values ​​of the two-circle pressure sensors on the bottom surface, and the grain quantity detection model based on the standard deviation of the output values ​​of the two-circle pressure sensors on the bottom surface. The proposed model and detection method have the characteristics of high detection accuracy, adaptability to various granary structure types, and convenient remote online granary quantity detection.

Description

technical field [0001] The invention relates to a granary detection method and system based on a two-circle standard deviation polynomial model on the bottom surface, and belongs to the technical field of sensors and detection. Background technique [0002] Food security includes quantity security and raw food security. Research and application of on-line grain quantity detection technology and system is an important guarantee technology for national grain quantity security. Carrying out research and application in this area is related to national food security, which is of great significance and will generate huge social and economic benefits. [0003] Due to the important position of food in national security, the online detection of food quantity is required to be accurate, fast and reliable. At the same time, due to the huge amount of grain and the low price, it is required that the online detection equipment for grain amount is low in cost, simple and convenient. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G17/04
CPCG01G17/04
Inventor 张德贤张苗
Owner HENAN UNIVERSITY OF TECHNOLOGY