Algae recognition measurement sensor and method

Abstract

The invention discloses an alga identification and measurement sensor and method. The sensor comprises a multi-wavelength high-brightness LED (light-emitting diode) excitation light source, an optical lens, an optical filter, a light-splitting optical grating, a photoelectric detection unit consisting of a plurality of photoelectric detectors with different detecting wavelengths and an electronic circuit system and the like which are in integrated arrangement, and meanwhile, an ultrasonic generator, a temperature sensor and a mechanical cleaning device and the like are integrated in the sensor. In the method, a multi-wavelength fluorescence detection technology is adopted and information, such as alga ingredients and concentration and the like in a water body is obtained through measuring an excitation spectrum of the alga in the water body and carrying out corresponding calculation. According to the invention, the multi-wavelength fluorescence detection technology is adopted, the problem of detection error caused by Redshift can be effectively solved and the actual excitation fluorescence spectrum and the alga information can be effectively reflected. The alga identification and measurement sensor and method are particularly suitable for long-term monitoring and on-site real-time, fast and accurate measurement of alga in water body environments.

Description

technical field [0001] The invention particularly relates to an algae identification and measurement sensor and method, which are suitable for real-time and rapid identification and measurement of planktonic algae in water bodies such as rivers, lakes and reservoirs, and belong to the technical field of water environment protection. Background technique [0002] With the development of social industrialization in our country, the degree of eutrophication of lakes has greatly intensified. As a result, a large number of aquatic organisms have been multiplied and the ecological balance of the original water body has been destroyed. The main manifestation of eutrophication is water bloom, among which the lakes with the most severe water bloom in our country are Dianchi Lake, Taihu Lake and Chaohu Lake. There are many algae in the water bloom, but the main dominant algae species are cyanobacteria, especially Microcystis aeruginosa, Anabaena anabaena etc. The main reason is that...

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Problems solved by technology

However, the generation of fluorescence has a great relationship with the photosynthesis and physiological state of algae. Different algae species contain different pigment compositions, and the spectral characteristics of their water bodies are also different. The height and position of fluorescence characteristic peaks are related to the concentration of chlorophyll. The relationship is not consistent, not only that, but the fluorescent light peak appears "red shift" with the change of chlorophyll concentration

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