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Systems and methods for measuring relative density differences between identical materials

A relative density and the same measurement technology, applied in the field of precision measurement, can solve the problems of large measurement errors and relative density differences, and achieve the effect of overcoming large errors

Active Publication Date: 2018-03-20
NAT INST OF METROLOGY CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The disclosure provides a system and method for measuring the relative density difference between the same materials, which overcomes the defect of large measurement errors in existing methods

Method used

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  • Systems and methods for measuring relative density differences between identical materials
  • Systems and methods for measuring relative density differences between identical materials
  • Systems and methods for measuring relative density differences between identical materials

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Embodiment Construction

[0027] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0028] The present disclosure proposes a method of measuring the relative density difference between the same materials. There may be small differences in density between two spheres made of the same material. When two spheres move vertically in liquids with similar densities, the accelerations of the vertical motion may be different, which is reflected in the different displacement curves along the vertical direction with time. The accele...

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Abstract

The invention provides a system and a method for measuring the relative density difference between same materials. The system comprises a liquid storage unit, an image acquisition unit and a processing unit, wherein the liquid storage unit is used for storing liquid, and a first sphere and a second sphere which are made of the same materials; the liquid storage unit comprises a first keeping device and a second keeping device, which are used for controlling the first sphere and the second sphere to move in the liquid respectively; the storage unit can be sealed; the image acquisition unit is used for acquiring movement states of the first sphere and the second sphere; and the processing unit is used for calculating the relative density difference between the first sphere and the second sphere according to the movement states of the first sphere and the second sphere. The relative density difference between the two spheres is calculated by using the difference of vertical movement and displacement of the two spheres made of the same materials under the same conditions, and the defect that errors of an existing method is relatively great is overcome.

Description

technical field [0001] The present disclosure relates to the field of precision measurement, and in particular to a system and method for measuring the relative density difference between the same materials. Background technique [0002] There are often tiny differences in density between two objects made of the same material, and it is necessary to measure them in precision experiments. At present, the traditional definition method is usually used to measure the relative density difference between the same materials, that is, first measure the density values ​​of two objects respectively, and then calculate the difference between the two to obtain the relative density difference. The disadvantage of this method is that the error is too large, so a method and system that can accurately measure the relative density difference between the same materials is expected. Contents of the invention [0003] The disclosure provides a system and method for measuring the relative den...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/10G01N9/36
CPCG01N9/10G01N9/36
Inventor 李之昊王金涛刘子勇陈超云刘翔佟林暴雪松
Owner NAT INST OF METROLOGY CHINA
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