Non-contact water quality detecting device for surface water

Abstract

A non-contact water quality detecting device for surface water comprises multiple spectral sampling heads, collimators, an optical path gating device, a bifurcated optical fiber and a miniature spectrograph. Each spectral sampling head is connected with the corresponding optical fiber collimator through an optical fiber, the optical fiber collimators are in one-to-one correspondence with collectivelenses of the bifurcated optical fiber on corresponding optical paths, the optical path gating device is located between the optical fiber collimators and the colletivelenses, the optical path gating device is provided with a gating channel which rotates around a rotating shaft, and in the rotating process of the gating channel, the optical path between one optical fiber collimator and the corresponding collectivelens can be made to be in conducting state. Compared with the prior art, the non-contact water quality detecting device for the surface water has the advantages that a continuous spectral measurement method is adopted, on-site non-contact water quality detecting for the surface water is achieved, water quality parameters such as colored dissolved organic matter, total suspended matter and chlorophyll a can be detected simultaneously, and the non-contact water quality detecting device for surface water has the advantages of being low in cost, convenient to use, high in measurement speed and free of pollution.

Description

technical field [0001] The invention relates to a non-contact surface water quality detection device, which belongs to the technical field of water quality detection. Background technique [0002] Parameters such as chlorophyll a concentration, phycocyanin concentration, colored soluble organic matter, suspended solids, and transparency in surface water such as rivers, lakes, ponds, and water supply reservoirs are important water quality parameters for routine water quality testing of surface water. These water quality parameters are related to drinking water, aquatic products, etc. Water quality safety issues such as aquaculture, industrial production, and environmental pollution. The usual method for testing the above-mentioned surface water quality parameters is to take samples on site and bring the samples back to the laboratory for testing with laboratory analysis equipment. The disadvantage of this method is that it consumes a lot of time, high cost, and low testing fr...

AI Technical Summary

Problems solved by technology

However, the existing water quality detection methods are all contact methods, such as online water quality detection, which uses a sampler to send the measured water sample to the optical sensor head for optical detection; the immersion sensor head can directly place the sensor head In water, the efficiency is greatly improved, but since the sensor is put into the water for measurement, the substances in the water will pollute the sensor head, reducing the accuracy of measurement and inconvenient maintenance

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