A polarized water turbidity measuring device, measuring system and measuring method

Abstract

The invention discloses a polarized water turbidity measurement device, system and method. The polarized water turbidity measurement device is characterized by comprising a light source (1) which is used for emitting monochromatic light I to a first lens (2), wherein the monochromatic light I sequentially penetrates through the first lens (2) and a first polarizing film (5) and is split into incident light Ia and scattered light Ib by a light splitting mirror (8), the included angle between the incident light Ia and the scattered light Ib is 90 degrees, the scattered light Ib enters a first photoelectric detector (7), 90-degree surface scattered light I<a1> formed after the incident light Ia enters a measurement groove (3) sequentially penetrates through a second polarizing film (6) and a second lens (4) and enters a second photoelectric detector (9); a temperature measurement sensor is arranged in the measurement groove (3). According to the device, the system and the method, by virtue of a data processing manner of a least square support vector machine, the temperature is compensated, the measuring error is eliminated, and the measurement accuracy is improved.

Description

technical field [0001] The invention relates to a polarized water turbidity measuring device, a measuring system and a measuring method, belonging to the technical field of liquid turbidity measurement. Background technique [0002] The turbidity of water is an optical effect in water samples, which refers to the degree of transparency of water samples caused by the scattering and absorption of light by suspended solid particles and impurities in water samples. The turbidity is related to the concentration of impurities and optical properties. In recent years, water pollution incidents have occurred from time to time, threatening the lives and health of the general public, and arousing the public's concern about water quality monitoring. Photoelectric measurement is widely used in the field of turbidity measurement due to its fast and accurate characteristics. [0003] According to the international standard ISO7027 for turbidity measurement, the measurement of turbidity i...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a polarized water turbidity measurement device and measurement system with a single light source and dual optical path polarized light; further, the present invention provides a method for solving turbidity measurement caused by unstable light source error, and eliminate the influence of background light and multiple scattered stray light, and at the same time adopt the least squares support vector machine data processing method to compensate the temperature, eliminate the measurement error, and improve the measurement accuracy of the polarized water turbidity measurement method

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