An automatic liquid-adding control method for realizing constant volume of volumetric flask

Abstract

The invention discloses an automatic liquid adding control method for realizing constant volume of a volumetric flask. The automatic liquid adding control method comprises the following steps: arranging an image sensor 16 on the side of the volumetric flask 11 for aligning scale lines on the volumetric flask 11, wherein the image sensor 16 is connected with a control device 4, the image sensor 16 collects an image according to a brightness value or a chromatism value, amplifies the image at high proportion, and performs threshold segmentation to identify the position of the scale mark on the volumetric flask 11 and the position of the liquid level of liquid in the volumetric flask, when the two positions are overlapped, the control device 4 outputs a feedback signal for controlling the opening and closing of a stop valve 6 and action and rotating speed of a speed governing pump 5, to realize automatic liquid adding process of the volumetric flask 11. A device for realizing the method disclosed by the invention realizes automatic and quantitative adding of liquid through program control of the control device, the operation is simple, reliable, and high in accuracy and speed, and the production cost is saved.

Description

technical field [0001] The invention relates to an automatic liquid-adding control method for realizing constant volume of a volumetric flask, and belongs to the technical field of chemical analysis and quantitative analysis. Background technique [0002] The automatic liquid addition device is an automatic, non-contact device that can accurately realize the automatic addition of liquids, and is used to realize the automatic addition of various liquids in analysis and testing. In conventional chemical analysis, the liquid addition process still needs to be manually operated by the operator, and the manual operation is cumbersome and the work efficiency is relatively low. When the amount of liquid to be added is large, it is time-consuming, laborious, and error-prone. With the acceleration of the pace of modernization, the accuracy and timeliness of analytical test data are getting higher and higher. It is difficult for the traditional means of liquid addition to meet the cur...

AI Technical Summary

Problems solved by technology

In conventional chemical analysis, the process of adding liquid still needs to be manually operated by the operator, and the manual operation is cumbersome and the work efficiency is relatively low. When the amount of liquid to be added is large, it is time-consuming and labor-intensive, and error-prone

With the acceleration of the pace of modernization, the accuracy and timeliness of analytical test data are getting higher and higher. It is difficult for the traditional means of liquid addition to meet the current needs. This requires an automatic liquid addition method that can adapt to the requirements of modern chemical analysis.

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