Computer vision-based system and computer-vision based method for automatically measuring viscosity of colored liquid

A technology of computer vision and colored liquid, applied in liquid/fluid solid measurement, engine lubrication, machine/engine, etc., to improve measurement accuracy and efficiency, and overcome human error

Inactive Publication Date: 2009-10-21
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A special viscometer is used, which brings a lot of troubles for the calibration of the viscometer constant, the regular identification of the viscometer during use, and the replacement of the viscometer after damage.

Method used

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  • Computer vision-based system and computer-vision based method for automatically measuring viscosity of colored liquid
  • Computer vision-based system and computer-vision based method for automatically measuring viscosity of colored liquid
  • Computer vision-based system and computer-vision based method for automatically measuring viscosity of colored liquid

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Embodiment Construction

[0033] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0034] see figure 1 , the computer vision-based automatic system for measuring the viscosity of colored liquids, including a Pinnacle viscometer 2 fixed on a fixed frame 3, is characterized in that an air pumping system 1 is connected to the Pinnacle viscometer 2, and there is a The computer vision system 4 connects the Pins viscometer; the air pumping system 1 is used to automatically raise the position of the liquid level in the Pins viscometer 2, and the computer vision system 4 is used to capture the liquid in the Pins viscometer. The surface position change image and calculate the viscosity of the measured liquid.

[0035] like figure 1 and figure 2 As shown, the above air extraction system 1 is: the upper end of the capillary tube of the Pinnacle viscometer 2 is connected to an air extraction pump 11 by an air extraction tube 9 , and ...

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Abstract

The invention relates to a computer vision-based system and a computer-vision based method for automatically measuring the viscosity of colored liquid. The system comprises a BS/U/M miniature suspended level viscometer fixed on a fixed bracket, a BS/U/M miniature suspended level viscometer connected with an exhaust system and a BS/U/M miniature suspended level viscometer connected with a computer vision system. The method comprises the following steps: (a) building a viscometer scale mark position template; (b) performing liquid level detection and tracking; (c) measuring the difference between the time when the liquid level passes through a lower scale mark and the time when the liquid level passes through an upper scale mark; and (d) performing the viscosity calculation to obtain the viscosity of liquid measured. The method performs automatic measurement, overcomes errors of manual measurement, and improves measurement accuracy and measurement efficiency.

Description

technical field [0001] The invention relates to a system and method for automatically measuring the viscosity of colored liquids based on computer vision, and belongs to the technical fields of instrumentation technology and automatic testing. Background technique [0002] The kinematic viscosity of a liquid is an important indicator of a liquid, which is of great significance in various industries such as petroleum, chemical industry, textile, national defense, and medicine. In the process of measuring the viscosity of liquids, a pinch glass capillary viscometer is often used. Due to the special structure of the double ball chamber connected by the Pinnacle viscometer, it is difficult to realize the automatic measurement of the liquid viscosity, and the method of manually pinching the meter is often used for measurement. In manual measurement, human error will inevitably be brought to the measurement, and the measurement period is long. The automatic kinematic viscometers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/06G01F23/292
Inventor 于瀛洁李雨浪彭军政张翊
Owner SHANGHAI UNIV
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