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Network and mobile terminal water quality detection method and detection system

A technology of water quality detection and mobile terminal, which is applied in signal transmission system, measuring device, and material analysis by observing the influence of chemical indicators, etc. problems, to achieve the effect of preventing fraud, saving testing costs, expanding the scope of testing and testing items

Pending Publication Date: 2021-01-01
刘邦楠
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to solve the deficiencies of the prior art, to provide a network plus mobile terminal water quality detection method and detection system, which combines photoelectric colorimetry and visual colorimetry to correct the error of visual colorimetry, thereby Using mobile terminals, such as smart phones, can realize water quality detection, and solve the problem that optical detection instruments are difficult to conveniently use in a large number of in-situ detection due to bulky and expensive

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  • Network and mobile terminal water quality detection method and detection system

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Embodiment 1

[0057] For a group of liquids containing the detected items with similar concentrations, carry out the dyeing reaction according to the specification requirements to form a group of solutions containing the detected items. In the interval where the concentration is close to that obtained by photoelectric colorimetry, the concentration D of this group of detected items, and the first absorbance A of the detected item corresponding to the same wavelength of light, are obtained by using the Lambert-Beer law. Correspondence between the concentration D of the item and the absorbance A of the detected item:

[0058] D=bA+Z...(I);

[0059] In the formula: both b and Z are constants, and since the first absorbance A and the first light transmittance T are in a logarithmic relationship, the value of the first light transmittance T can also be collected here, and then the first light transmittance T can be obtained according to the logarithmic operation. As for the value of absorbance ...

Embodiment 2

[0078] The value of B in Example 1 can also be obtained by linear or nonlinear regression, or when an unacceptable difference between D and d is found through experiments, linear or nonlinear regression is used to correct the value of B.

[0079] That is when:

[0080] (D-d)>K...(IV)

[0081] Then: A>a+K / b...(V)

[0082]When there is still a large error in formula (III) and formula (IV), the relationship between A and a can be obtained from the regression equation, which is the relationship between the absorbance obtained from the color clicked on the chromatogram on the display screen and the true absorbance A. From Table-3, a and d can be linearly or nonlinearly regressed to obtain:

[0083] d=Ba+z...(VI), wherein: B=∑(ai-a0)(di-d0) / ∑(ai-a0)(ai-a0), in this example, i=1,2,... 30, a0 and d0 are the average values ​​of a and d respectively. z=d0-B(a0). That is, both B and z are constants. Formula (I)-formula (VI) draws: A=(D-d+z-Z+Ba) / b...(VII), then also can draw K valu...

Embodiment 3

[0085] Compared with photoelectric colorimetry, visual colorimetry has certain errors, so this embodiment shows a method for correcting the deterioration of visual colorimetry in step S1, which is specifically as follows.

[0086] First, take 30 to 50 standard samples in a certain concentration range for the tested items of water samples, for example, take 30 standard water samples in the range of 0.01mg / L to 1mg / L for heavy metal chromium, which are: 0.005,0.01…1.5. The concentration range of sampling depends on two factors. The first is that within this concentration range, there is a linear relationship between concentration and absorbance; the second is that within this concentration range, the absorption light has a peak, and the wavelength is a known number, 540nm. Both of these factors can be found in the standard operation of water quality testing. Then, 30 standard water samples were detected by photoelectric colorimetry, and the linear relationship between their abs...

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Abstract

The invention relates to the technical field of water quality detection, in particular to a network and mobile terminal water quality detection method and detection system. The method comprises the steps of obtaining the corresponding relation between the concentration D of a detected item and the absorbance A of the detected item through a photoelectric colorimetric method, and obtaining the concentration d of the detected item corresponding to the color G of a solution through a visual colorimetric method; obtaining the correspondence of the concentration d of the detected item and the colorG of the solution so as to obtain the absorbance corresponding to the color of the current solution, and calculating the concentration of the detected item through the Lambert-Beer law according to the absorbance. According to the present invention, the photoelectric colorimetric method and the visual colorimetric method are combined to correct errors of a visual colorimetric method, and the problem that an optical detection instrument is cumbersome and is difficult to be conveniently used for in-situ detection is solved; by separating data processing equipment from a water quality detector,a conventional detection method for calculating a detection result from a database, software and a calculation formula in a water quality detection instrument is changed.

Description

technical field [0001] The invention relates to the technical field of water quality detection, in particular to a water quality detection method and detection system with a network and a mobile terminal. Background technique [0002] Without extensive testing of the water, there is no basis for purifying the water. Existing water quality detection methods rely too much on automatic detectors, and their accuracy and density are not high; they rely too much on automatic detection stations, and overemphasize no manual operation, which will ignore the quality, accuracy and density of water quality detection. The automatic station is an indispensable tool for routine detection, but automatic detection requires a lot of investment, and it cannot be used as a tool for a large number of in-situ detection; it must be on the premise of understanding the general situation of the water body in order to play a better role. Although the number of water quality testing stations is still ...

Claims

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Application Information

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IPC IPC(8): G01N21/79G01N21/01G08C17/02
CPCG01N21/79G01N21/01G08C17/02
Inventor 刘邦楠
Owner 刘邦楠
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