Liquid clarity detection method, system and device

Abstract

The invention provides a liquid clarity detection method, a liquid clarity detection system and a liquid clarity detection device. The method comprises the following steps: determining actual flow velocity of liquid, and determining measured flow velocity of the liquid by using an optical flow sensor; and determining liquid clarity according to the difference between the actual flow velocity and the measured flow velocity. A principle is as follows: the optical flow sensor acquires instantaneous displacement of a target according to the position change of an imaged bright point; when the liquid is in a dirty state, the imaged bright point is clear to facilitate the calculation of the liquid velocity, and the dirtier the liquid is, the more accurate the calculation of the liquid flow velocity is; and when the liquid is in a clear state, the imaged bright point is not obvious to be bad for calculation of the liquid speed, so the clearer the liquid is, the more the liquid flow velocity determined by the optical flow sensor tends to be zero. Therefore, the clarity of the liquid can be determined through a difference value between the liquid flow velocity determined by the optical flow sensor and the actual flow velocity of the liquid.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a liquid clarity detection method, system and device. Background technique [0002] Liquid clarity is an important parameter for evaluating the degree of contamination of liquids. Taking water as an example, the clarity of water can directly reflect the cleanliness of water, so how to quickly and accurately measure the clarity of water has always been an important issue. The existing technology often relies on human observation and laboratory testing: human observation is very real-time, but the results cannot be quantified and are very inaccurate; laboratory testing can obtain very accurate results, but its real-time performance is poor. It can be seen from this that there is a lack of a liquid clarity testing method and device with strong real-time performance and data accuracy within an acceptable range in the prior art. Contents of the invention [0003] The technica...

AI Technical Summary

Problems solved by technology

The existing technology often relies on human observation and laboratory tests: human observation is very real-time, but the results cannot be quantified and are very inaccurate; laboratory tests can obtain very accurate results, but their real-time performance is poor

It can be seen from this that there is a lack of a liquid clarity testing method and device with strong real-time performance and data accuracy within an acceptable range in the prior art.

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