Water quality sensor

Abstract

The invention discloses a water quality sensor. The sensor comprises a shell and an optical window arranged in the shell. The water quality sensor also comprises an ultraviolet light emitting source and a medium part which is used as the ultraviolet light transmitting medium. The ultraviolet light emitting source and the medium part are configured so as to make at least part of the ultraviolet lights emitted by the ultraviolet light emitting source are completely internally reflected in the optical window. The water quality sensor is provide with an ultraviolet light emitting source, which can emit ultraviolet lights to prevent and eliminate biological stains that may attach on the optical window. Besides, the ultraviolet lights are all confined in the optical window because of the light complete internal reflection, thus the total radiation strength is enhanced, so the water quality sensor can prevent biological pollution for a longer time, and the on-site continuous operation time of the water quality sensor is increased. The water quality sensor has the advantages of simple structure and low cost.

Description

technical field [0001] The invention belongs to the technical field of environmental sensor manufacturing, and in particular relates to a water quality sensor. Background technique [0002] Water quality sensors are used to monitor the quality of water bodies in various environments, and generally include monitoring indices such as turbidity, pH value, dissolved oxygen, conductivity, temperature, and salinity of water bodies. Since the water quality sensor needs to be deployed in the water environment for a long time, it is inevitable that a large amount of biological pollution such as animals and plants may accumulate on the sensor, thereby affecting the accuracy of the sensor. [0003] In the existing design, a variety of methods to prevent the accumulation of biological contamination on the sensor have been developed: the more common one is to assemble a brush or sponge pad driven by a motor on the sensor, and clean the surface of the sensor through mechanical action , b...

AI Technical Summary

Problems solved by technology

Since the water quality sensor needs to be deployed in the water environment for a long time, it is inevitable that a large amount of biological pollution such as animals and plants may accumulate on the sensor, thereby affecting the accuracy of the sensor

[0003] In the existing design, a variety of methods to prevent the accumulation of biological contamination on the sensor have been developed: the more common one is to assemble a brush or sponge pad driven by a motor on the sensor, and clean the surface of the sensor through mechanical action , but its disadvantage is that the volume is large, and the motor consumes a lot of power, and, more fatally, since this type of water qu

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