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Liquid turbidity measuring device and its measuring method

A technology of measuring device and measuring method, which is applied in the field of water quality measuring instruments and liquid parameter measurement, can solve the problems that the influence of measurement cannot be eliminated, and achieve the effect of eliminating the drift of measurement results, eliminating zero point drift, and eliminating measurement errors

Active Publication Date: 2019-06-18
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Claims
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Problems solved by technology

However, in the process of measuring the intensity of transmitted light and scattered light, the measurement gain drift due to the aging of the photosensitive element or being blocked by pollutants, the zero point and gain drift due to the aging of the measurement circuit, and the influence of ambient light on the measurement are still indelible

Method used

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  • Liquid turbidity measuring device and its measuring method
  • Liquid turbidity measuring device and its measuring method
  • Liquid turbidity measuring device and its measuring method

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Embodiment Construction

[0060] Herein, the detailed content and technical description of the present invention will be further described with a preferred embodiment, but it should not be construed as a limitation to the implementation of the present invention.

[0061] See Figure 1-3 , figure 1 It is a flow chart of the liquid turbidity measurement method of the present invention; figure 2 for figure 1 Step-by-step flow chart of step 1; image 3 for figure 1 Step-by-step flowchart of step 2 in. Such as Figure 1-3 Shown, liquid turbidity measuring method of the present invention comprises:

[0062] Step 1: Drive two light sources to emit light correspondingly according to two sinusoidal current signals;

[0063] Step 2: Collect and convert the transmitted light and scattered light emitted by each light source to obtain two digital signals;

[0064] Step 3: Obtain the transmitted light intensity parameters and scattered light intensity parameters of each light source according to each digita...

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Abstract

The invention discloses a liquid turbidity measuring device and a measuring method thereof. The liquid turbidity measuring method comprises: step 1 of correspondingly driving two light sources to give out light according to two sine-wave current signals; step 2 of collecting and converting transmission light and scattered light emitted by each light source to obtain two paths of digital signals; step 3 of obtaining a transmission light strength parameter and a scattered light strength parameter of each light source according to each path of digital signals; step 4 of obtaining the liquid turbidity according to the transmission light strength parameter and the scattered light strength of each light source.

Description

technical field [0001] The invention relates to the field of water quality measuring instruments, and is particularly suitable for making online water quality turbidity monitoring sensors in oceans, rivers, lakes, and water supply and drainage pipelines, and belongs to the technical field of liquid parameter measurement. Background technique [0002] The turbidity of a liquid is a reflection of the absorption and scattering of light by impurities such as suspended solids, microorganisms, and colloidal substances of different shapes, sizes, and specific gravity in the liquid, and is an optical property of the liquid. With the improvement of people's living standards and the increasing concern for life, health and natural environment, people pay more and more attention to the monitoring of water quality turbidity. Turbidity is not only one of the important indicators to measure the quality of liquid, but also an important basis for examining the effect of liquid treatment. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/53
CPCG01N21/532
Inventor 黄希孙明亮崔莉
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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