Automatic titration device capable of detecting change in colour of solution based on machine vision and detection method thereof

Abstract

The invention discloses an automatic titration device for detecting the color change of a solution based on machine vision, which includes a housing, a detection platform and a titration cup arranged in the housing, and a machine vision device for receiving The image signal of the color change of the solution, and the image signal is converted into a digital signal; the titration component is used to titrate the titrant in the titration cup; the stirring device includes a stirring piece for stirring the solution to be tested, and also includes an image Feedback device, a speed regulating device that drives the stirring member to stir, the image feedback device is connected to the speed regulating device signal to adjust the stirring speed of the stirring member; industrial control device, used to control the machine vision device, The titration component and the stirring device work, and receive the digital signal of the machine vision device to calculate the composition of the test product in the titration cup. The device provided by the invention can detect the composition parameters of multiple grains at one time.

Description

technical field [0001] The invention relates to the technical field of grain detection, in particular to an automatic titration device and a detection method for detecting the color change of a solution based on machine vision. Background technique [0002] There are many titration reactions based on color changes in grain testing methods, such as: grain fatty acids, reducing sugars, acidity, oil acid value and peroxide value, etc. However, most of the grain, oil, feed, and food testing and analysis laboratories currently use general glass burettes , most of them use manual titration and visually determine the end point. Although the equipment is simple and conducive to popularization, due to the difference in external light and operator experience, human errors are relatively large, especially in the determination of fatty acid value and peroxide value. , The measurement results are not comparable, which brings difficulties to judge the quality of grain and oil, and conside...

AI Technical Summary

Problems solved by technology

[0002] There are many titration reactions based on color changes in grain testing methods, such as: grain fatty acids, reducing sugars, acidity, oil acid value and peroxide value, etc. However, most of the grain, oil, feed, and food testing and analysis laboratories currently use general glass burettes , most of them use manual titration and visually determine the end point. Although the equipment is simple and conducive to popularization, due to the difference in external light and operator experience, human errors are relatively large, especially in the determination of fatty acid value and peroxide value. , the measurement results are not comparable, which brings difficulties to judge the quality of grain and oil, and considerable testing equipment is urgently needed

Most of the automatic titration devices on the market are potentiometric titrators. Due to the cumbersome cleaning and maintenance of the sensor (electrode) in the direct measurement method, there are few applications. The existing domestic photometric titrators based on monochromatic light can only detect one indicator. , there is no photometric titrator that can simultaneously measure multiple indicators

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