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Centrifugal density measurement device and method based on diamagnetic levitation principle

A density measurement, centrifugal technology, which is used in the determination of specific gravity, analytical materials, instruments, etc. by centrifugal action. It can solve the problems that the sensitivity cannot be continuously improved, and the measurement takes a long time, and achieves the effect of overcoming complicated operations and adjustable sensitivity.

Active Publication Date: 2017-12-15
SHANGHAI JIAO TONG UNIV
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  • Description
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Problems solved by technology

However, this measurement method takes a long time to measure, and it cannot continue to improve the sensitivity of the measurement without changing the magnetic field device and the concentration of the solution.

Method used

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  • Centrifugal density measurement device and method based on diamagnetic levitation principle
  • Centrifugal density measurement device and method based on diamagnetic levitation principle
  • Centrifugal density measurement device and method based on diamagnetic levitation principle

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Embodiment Construction

[0027] Such as figure 1 As shown, the present embodiment includes: a magnetic field generating device 1, a measuring box 2, a rotating device 3, an image acquisition device 4 and a computer 5, wherein: the outer surface of the measuring box 2 is provided with scale marks in the vertical and horizontal directions, and the measuring box 2 is arranged in the magnetic field generating device 1, the magnetic field generating device 1 and the image acquisition device 4 are arranged on the installation disc 23 of the rotating device 3, the image acquisition device 4 is set corresponding to the measurement box 2, the image acquisition device 4 is connected with the computer 5 and Output the image information of the measurement box 2, the computer 5 is connected with the rotating device 3 and output the speed control information;

[0028] Such as figure 2 As shown, the magnetic field generating device 1 includes: two supporting plates 10 arranged in parallel, frame connecting columns...

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Abstract

Belonging to the technical field of measurement and metering, the invention relates to a centrifugal density measurement device and method based on diamagnetic levitation principle. The device comprises: a magnetic field generator, a measurement box, a rotating apparatus and an image acquisition control apparatus. Specifically, the outer surface of the measurement box is provided with graduation lines in the vertical and horizontal directions, the measurement box is disposed in the magnetic field generator, the magnetic field generator and the image acquisition control apparatus are disposed on a rotation plane of the rotating apparatus, and the image acquisition control apparatus is disposed correspondingly to the measurement box, the image acquisition control apparatus acquires the image information of the measurement box and outputs rotational speed control information to the rotating apparatus. The device and method provided by the invention employ rotary centrifugal dynamic measurement and shorten the measurement time, also without changing the solution concentration and external magnetic field distribution, achieve adjustment of measurement sensitivity by adjusting the motor rotation speed and the rotation centrifugal radius.

Description

technical field [0001] The invention relates to a technology in the field of measurement and measurement, in particular to a centrifugal density measuring device and method based on the principle of anti-magnetic levitation. Background technique [0002] Density is one of the basic physical properties of matter, and its measurement has a wide range of applications in biology, medicine, physics, chemical industry, food and other fields. At present, the methods of density measurement mainly include balance weighing, hydrometer, density gradiometer, suspended microchannel gradiometer, magnetic levitation balance meter, etc. However, these methods are usually expensive, inconvenient to operate, time-consuming, complicated measurement process, and difficult to measure substances with low density and irregular shape. [0003] With the continuous development of anti-magnetic levitation technology, based on the material density measurement method of anti-magnetic levitation technol...

Claims

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Application Information

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IPC IPC(8): G01N9/30G01N15/00
CPCG01N9/30G01N15/00
Inventor 高秋华张文明胡璐邹鸿翔
Owner SHANGHAI JIAO TONG UNIV
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