Water body nitrogen and phosphorus element content analysis based on photoconductive resistance photoelectric characteristics

A technology of photoresistor and element content, applied in the measurement of color/spectral characteristics, material analysis by electromagnetic means, material analysis by optical means, etc., can solve the problem of poor user experience for merchants and users, frequent return disputes, clothing size Inappropriate and other problems, to achieve the effect of volume monitoring at any time, convenient equipment and high sensitivity

Pending Publication Date: 2020-09-15
TIANJIN UNIV
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Problems solved by technology

[0002] In recent years, online shopping platforms have become more and more popular, and more and more users tend to purchase clothing on online shopping platforms. However, due to the information asymmetry caused by virtual attributes, many users purchase clothing of inappropriate sizes, resulting in frequent return disputes. , bringing a bad user experience to merchants and users

Method used

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  • Water body nitrogen and phosphorus element content analysis based on photoconductive resistance photoelectric characteristics
  • Water body nitrogen and phosphorus element content analysis based on photoconductive resistance photoelectric characteristics
  • Water body nitrogen and phosphorus element content analysis based on photoconductive resistance photoelectric characteristics

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. Such as Figure 1-Figure 9 As shown, an analysis of the content of nitrogen and phosphorus in water based on the photoelectric characteristics of photoresistors,

[0022] Select the following components:

[0023] Helium-neon laser: select the semi-cavity helium-neon laser, which is simple to manufacture and easy to adjust. The plane mirror composition) and laser power supply (DC voltage 220V power supply), such as figure 1 .

[0024] Photoresistor: Photoresistor means that when the resistance is subjected to changes in light intensity, it produces a photoconductive effect and the resistance value changes. The photoresistor has no polarity. When there is no light, the dark resistance of the photoresistor value is very large, and the dark current of the current in the circuit is very small. When the pho...

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Abstract

The invention relates to the technical field of water body analysis, in particular to water body nitrogen and phosphorus element content analysis based on photoconductive resistance photoelectric characteristics, which comprises the following steps: 1, carrying out water quality sampling and test paper manufacturing; step 2, carrying out laser irradiation; 3, converting an electric signal into anoptical signal; and 4, determining the content of nitrogen and phosphorus elements. According to the method, the resistance can be accurately changed along with the change of the illuminance, amplification is carried out through the current amplifier, and the content of nitrogen and phosphorus elements is accurately measured according to a relationship between the change value of the detection voltage and the element content.

Description

technical field [0001] The invention relates to the technical field of water body analysis, in particular to an analysis of nitrogen and phosphorus element content in water body based on photoelectric characteristics of a photoresistor. Background technique [0002] In recent years, online shopping platforms have become more and more popular, and more and more users tend to purchase clothing on online shopping platforms. However, due to the information asymmetry caused by virtual attributes, many users purchase clothing with inappropriate sizes, resulting in frequent return disputes. , Bringing a bad user experience to merchants and users. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and provide an analysis of the content of nitrogen and phosphorus elements in water based on the photoelectric characteristics of photoresistors. [0004] In order to achieve the above object, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/39G01N27/12
CPCG01N27/125G01N21/31G01N21/39G01N2021/396
Inventor 张金旭邹强
Owner TIANJIN UNIV
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