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PH detection method

A detection method and detection area technology, applied in the field of pH detection, can solve problems such as inaccurate measurement, achieve the effects of improving calibration accuracy, facilitating frame selection identification and color correction, and improving frame selection accuracy

Pending Publication Date: 2021-07-27
四川省农业科学院分析测试中心
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Problems solved by technology

[0008] In view of the above-mentioned deficiencies in the prior art, a pH detection method provided by the present invention solves the problem of inaccurate measurement caused by artificial readings or equipment parameters in the existing pH detection method

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Embodiment Construction

[0061] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0062] Such as figure 1 and figure 2 Shown, this pH detection method comprises the following steps:

[0063] S1. Construct the detection area, red area, green area and blue area on the pH test paper, and obtain the RGB data of the red area, green area and blue area under the standard environment;

[0064] S2. Drop the liquid to be tested onto the detection area of ​​the pH test paper, obtain the on-site RBG value of the ...

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Abstract

The invention discloses a pH detection method. The method comprises the following steps: S1, acquiring RGB data of a red area, a green area and a blue area in a standard environment; S2, acquiring an on-site RBG value after a detection area reacts with a to-be-detected liquid, and acquiring on-site RGB data of the red area, the green area and the blue area; S3, obtaining the deviation percentage of the on-site RGB data and the RGB data in the standard environment; S4, reconstructing an on-site RBG value after the detection area reacts with the to-be-detected liquid according to the deviation percentage to obtain a reconstructed RGB value; and S5, performing color identification according to the reconstructed RGB value, obtaining the pH value of the to-be-detected liquid, and completing pH detection. According to the method, pH detection can be rapidly carried out, the influence of different devices and different environments on detection in the detection process is avoided, the influence of subjective factors of manual color recognition on a detection result is avoided, and the detection accuracy of the pH value can be effectively improved.

Description

technical field [0001] The invention relates to the field of pH detection, in particular to a pH detection method. Background technique [0002] The hydrogen ion concentration index (hydrogen ion concentration) refers to the ratio of the total number of hydrogen ions in a solution to the amount of total substances, generally called "pH" or "pH value". There are many ways to measure the pH of a solution: [0003] 1. Use a pH indicator. Add a pH indicator to the solution to be tested, different indicators will change color according to different pH, and the pH range can be determined according to the research of the indicator. When titrating, it can be used as an accurate pH standard. [0004] 2. Use pH test paper. pH test papers include broad test paper and precision test paper. Use a glass rod to dip a little of the solution to be tested onto the test paper, and then compare the color change of the test paper with the standard color card to obtain the pH of the solution....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06K9/46G06F16/53G06N3/04G01N21/80G01N21/01G01J3/46
CPCG06F16/53G01N21/80G01N21/01G01J3/462G06V10/56G06N3/045G06F18/214
Inventor 邱世婷侯雪韩梅李莹宋君雷绍荣郭灵安贺光云覃蜀迪
Owner 四川省农业科学院分析测试中心
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