Method and device used for detecting water body transparency

A technology of water body transparency and detection device, which is applied in measurement devices, color/spectral characteristic measurement, material analysis by optical means, etc. Cost, avoid error, high accuracy effect

Pending Publication Date: 2018-08-28
HUNAN CITY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the measurement method and remote monitoring system are not affected by objective factors such as time, weather, and test personnel, they have the characteristics of good real-time performance, stability and reliability, and have great application value in remote water transparency measurement. However, due to the light source and visible light wavelength Due to different reasons, due to the influence of light attenuation, there is a certain error in the measured transparency of the water body, and interference factors cannot be ruled out, especially under actual measurement conditions, the acquisition will form error accumulation and cannot be measured normally

Method used

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  • Method and device used for detecting water body transparency
  • Method and device used for detecting water body transparency
  • Method and device used for detecting water body transparency

Examples

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Embodiment 1

[0047] Such as figure 1 with figure 2 As shown, the water body transparency detection device provided by the present invention includes: a sealed cabin 1 for wrapping and protecting each module of the water body transparency detection device, a data acquisition module 2 for converting the detected optical signal into a digital signal, and for converting the digital signal into a digital signal. Signal calculation is the data analysis module (not shown in the figure) of water body transparency, is used to control the internal power supply of water body transparency detection device and the control module (not shown in the figure) of the collection and analysis of data and for water body transparency detection device power supply power supply (not shown in the figure). In this embodiment, the data acquisition module 2 includes a light source 21, an electrically connected light intensity receiver 22 and an A / D converter (not shown in the figure), and the light source and the li...

Embodiment 2

[0061] In this embodiment, the water transparency detection device provided by the present invention is used to detect the water transparency of two detection points 1 and 2 of the surface water of a certain lake in Hunan Province, and the average value is measured once or more, and five times are measured in this embodiment. Take the average value (Note: When the transparency of the water body is 1m, when the light penetrates the 1m water body, the light is completely absorbed).

[0062] Specifically, the distance (L a ) with light source and receiver at position b(L b ) when the distance difference l 1 is 0.1m, the distance when the light source and receiver are at position a (L a ) from the light source and receiver at position c (L c ) difference l 2 is 0.2m; when the light source and receiver are located at position a, the received optical power P 1 The photoelectric conversion current I 1 To characterize, when the light source and receiver are located at position b...

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Abstract

The invention discloses a method and a device which are used for detecting water body transparency. According to the method, penetration of water boy by light sources is realized at three different positions of a water area to be detected, the light power at the three positions is detected, and water body transparency L is determined based on formula 1. The device comprises a sealed chamber, a data acquisition module, a data analysis module, a control module, and a power supply. Compared with the prior art, the method possesses following advantages: light intensity difference collected by a light intensity receiver is taken as the transparent degree L of the water body, the automatic degree is higher than that of transparent scale method, error caused by artificial measuring is avoided. Inthe method, differential method is adopted to measure water body transparency for the first time, and generation of external interference and accumulated error is eliminated from principles; the suitable range is wide; the device can be used at water areas impossible for artificial measuring such as high density and automatic collection at water towers or in the wild; measuring cost is reduced greatly; a large amount of data sample is obtained; and real-time detection is realized.

Description

technical field [0001] The invention relates to the technical field of water body transparency detection, in particular to a water body transparency detection method and a water body transparency detection device. Background technique [0002] As an important parameter to describe the visibility of water body optical properties, water transparency is an important index to measure the quality of water, evaluate the eutrophication of lakes and water pollution prevention and control, and it is also indispensable in the investigation of water quality of reservoirs, lakes and surface water. project. With the increasingly serious problem of water pollution, the monitoring of water transparency has become a major issue that must be solved for the sustainable development of society and economy. The water quality of lake water is closely related to national production and people's life. Therefore, fast and accurate monitoring of lake water transparency is particularly important. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27G01N21/25
CPCG01N21/255G01N21/27
Inventor 徐玲黄紫薇陈益平周立波刘合安
Owner HUNAN CITY UNIV
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