Multi-parameter water quality monitoring system based on micro-optical-electro-mechanical system (MOEMS) micro spectrometer

Abstract

The invention provides a multi-parameter water quality monitoring system based on a micro-optical-electro-mechanical system (MOEMS) micro spectrometer. The multi-parameter water quality monitoring system consists of an optical detection system, a multi-sample / reagent introducing flow path system, a singlechip-based circuit control system, an embedded-type measuring and controlling system and a wireless transmission module, wherein the multi-sample / reagent introducing flow path system is used for delivering samples and reagents into the optical detection system; output signals of the optical detection system are connected to the embedded-type measuring and controlling system; the embedded-type measuring and controlling system controls the singlechip-based circuit control system from an upper layer; the multi-sample / reagent introducing flow path system consists of a flow path system which consists of a multi-position valve and a peristaltic pump of a miniature stepping motor; and the optical detection system consists of a collimating light source, a multi-functional miniature sample detection chamber and an MOEMS micro spectrometer. The multi-parameter water quality monitoring system has a function of efficiently and rapidly switching flow paths, has the advantages of higher sample extracting precision, rapidness in detection and high efficiency for cleaning, and can be widely applied to real-time monitoring of quality of surface water grade II.

Description

technical field [0001] The invention belongs to the technical field of online spectral water quality analysis and monitoring, and relates to a micro-optical electromechanical technology [0002] (MOEMS: Micro-Optical-Electro-Mechanical System) micro-spectrometer and multi-parameter water quality monitoring micro-system of modern spectral analysis technology. Background technique [0003] Water quality monitoring technology based on spectral analysis is an important development direction of modern environmental monitoring. Compared with traditional analysis methods such as chemical analysis, electrochemical analysis and chromatographic analysis, spectral analysis technology is more convenient to operate, consumes less reagents, and is more repeatable. Good, high measurement accuracy and fast analysis, it is very suitable for rapid online monitoring of environmental water samples. [0004] At present, the techniques mainly include atomic absorption spectroscopy, molecular abs...

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Problems solved by technology

[0005] However, traditional spectrophotometric water quality monitoring instruments based on molecular spectroscopy generally have technical deficiencies in many aspects such as large size, high power consumption, complex detection flow path, inconvenient portability and installation, and fewer monitoring parameters.

It is difficult to meet the technical development requirements of modern environmental monitoring for analytical instruments in terms of low power consumption, small size, convenient installation and use, fast real-time monitoring, and multi-functional system integration.

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