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Mass measurement correction method and system

A quality measurement and quality technology, applied in the field of metrology, can solve problems such as inability to remove air buoyancy, failure to eliminate surface adsorption quality, and quality value influence

Active Publication Date: 2016-01-20
NAT INST OF METROLOGY CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the quality standard is often transferred from "air" to "vacuum", and then from "vacuum" to "air". During the transfer process, the desorption phenomenon that occurs will affect the quality value
[0004] The inventor found that in the prior art, it is impossible to accurately remove the influence of air buoyancy when passing back and forth and measuring mass in both vacuum and air environments, and the surface adsorption mass is not eliminated. Therefore, it is necessary to develop a high-accuracy Degree quality measurement correction method

Method used

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  • Mass measurement correction method and system

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Embodiment 1

[0019] figure 1 A flowchart showing the steps of a quality measurement correction method according to an exemplary embodiment of the present invention. The mass measurement correction method according to an exemplary embodiment of the present invention may include: Step 101, performing multiple measurements on the standard weight and the weight to be measured, so as to obtain multiple indications of the standard weight and the weight to be measured; step 102. Perform air buoyancy correction and surface adsorption mass correction on the multiple indications of the standard weight and the weight to be tested, so as to obtain multiple corrected indications of the standard weight and the weight to be tested; step 103, based on the correction Calculate the indicated value difference between the weight to be tested and the standard weight for the following multiple indications; and step 104, calculate the vacuum mass difference between the weight to be tested and the standard weight...

Embodiment 2

[0099] figure 2 A schematic diagram of a mass measurement correction system according to an embodiment of the present invention is shown. The system may include: a rotating weight tray 205 on which weights can be placed and delivered during the rotation to be measured; a mass measuring device 204 capable of obtaining indications of the weights and a housing 206 defining a cavity capable of being in a vacuum state and an air state, the cavity housing the weight rotating tray 205 and the mass measuring device 204 . Wherein, the mass measuring device 204 may be a mass comparator, such as a balance.

[0100] According to the mass measurement correction system of this embodiment, it is possible to measure the mass or mass difference of weights in vacuum state and air state in one system, and these measurement results can be used to calculate air buoyancy and surface adsorption mass, and correct air buoyancy and surface adsorption mass , and then calculate the vacuum mass value o...

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Abstract

The invention discloses a mass measurement correction method and system. The method comprises: a standard counterweight and a to-be-measured counterweight are measured by multiple times to obtain a plurality of indicating values of the standard counterweight and the to-be-measured counterweight; aerostatic buoyancy correction and surface adsorption mass correction are carried out on the plurality of indicating values of the standard counterweight and the to-be-measured counterweight so as to obtain a plurality of indicating values of the standard counterweight and the to-be-measured counterweight after correction; indicating value differences between the standard counterweight and the to-be-measured counterweight are calculated based on the multiple indicating values after correction; and vacuum mass differences between the standard counterweight and the to-be-measured counterweight are calculated based on the indicating value differences so as to obtain the mass of the to-be-measured counterweight.

Description

technical field [0001] The disclosure belongs to the field of metrology, and more specifically, relates to a quality measurement correction method and system. Background technique [0002] In the field of metrology, quality measurement is very important. The usual weight measurement process is carried out in the air, and the weight will be affected by the air buoyancy, so the air buoyancy part needs to be corrected. Usually, sensors are used to measure environmental parameters such as atmospheric pressure, temperature, humidity, CO 2 , and the corresponding formula to calculate the air density, and then multiply it with the volume of the weight to get the size of the air buoyancy. In the process of high-accuracy mass measurement, it usually measures for a long period of time, and the environmental parameters will fluctuate to a certain extent during the measurement period. If the average value of the environmental parameters is used to calculate the air density, it will fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G23/01
Inventor 任孝平王健蔡常青
Owner NAT INST OF METROLOGY CHINA