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Device and method for measuring friction angle or repose angle of granular material

A technology for bulk materials and measuring devices, which is applied in measuring devices, using optical devices, analyzing materials, etc., can solve problems such as unintuitiveness, large errors, and inaccuracy, and achieve the effect of accurate measurement and intuitive measurement.

Inactive Publication Date: 2011-04-13
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The friction angle and angle of repose between the contact surfaces of granular materials and different materials are generally measured manually through an inclinometer, which has large errors, is inaccurate, and is not intuitive.

Method used

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  • Device and method for measuring friction angle or repose angle of granular material
  • Device and method for measuring friction angle or repose angle of granular material
  • Device and method for measuring friction angle or repose angle of granular material

Examples

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Embodiment 1

[0033] Such as figure 1 As shown, the structure of the device for measuring the friction angle or angle of repose of granular materials is as follows: the control end of the motor, the memory and the infrared beam tube are all connected to the microprocessor. The liquid crystal display is connected with the microprocessor. An inclination sensor is arranged on the material tray or the rotating shaft, and the output end of the inclination sensor is connected with the microprocessor.

[0034] Such as figure 2 As shown, the circuit control part of this embodiment includes five modules: a power supply module, an acquisition module, a liquid crystal display and keyboard control module, a communication module, and a U disk storage module.

[0035] The power supply module provides power to the liquid crystal display module, and provides it to the acquisition module after stepping down through the reference voltage module. The acquisition module sends the collected data to the U dis...

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Abstract

The invention discloses a device and method for measuring a friction angle or a repose angle of a granular material. A material plate is arranged on a rotary shaft of a motor; the two sides of the material plate are provided with a pair of infrared opposite tubes for judging whether the grain position is moved; the material plate is adjusted to a horizontal position; a grain is placed on a connection position of two infrared opposite tubes on the material plate; a control motor drives the material plate to incline; with the increased inclination angle of the material plate, the light path of the infrared opposite tube is not captured by a microprocessor in a grain-blocked state at the moment that the grain leaves the connection of the two infrared opposite tubes; the microprocessor records the inclination angle of the material plate at the moment; and the inclination angle is the friction angle or repose angle of the granular material. The device and method for measuring the friction angle or repose angle of the granular material have the advantages of high measuring speed, high precision and high automation degree.

Description

technical field [0001] The invention relates to a device and method for measuring friction angle or angle of repose of granular materials. Background technique [0002] In order to reasonably design various agricultural machinery, agricultural product processing machinery, barns and other storage equipment, it is necessary to understand the mechanical properties of granular materials, such as friction characteristics, and friction characteristics can be expressed by friction angle and repose angle. The friction angle and angle of repose between the contact surfaces of granular materials and different materials are generally measured manually through an inclinometer, which has large errors, is inaccurate, and is not intuitive. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a device and method for measuring the friction angle or angle of repose of granular materials, which have high measurement speed, high precisi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26G01N15/00
Inventor 蒋蘋谢方平王奕罗亚辉谢艳群胡文武谢昌盛艾卫中
Owner HUNAN AGRICULTURAL UNIV
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