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Seawater multiparameter sensor based on full-wavelength spectrum method

A spectroscopic and full-wavelength technology, applied in the field of environmental chemical monitoring, can solve the problems of affecting the accuracy of measurement results, limiting the scope of use, sensor detection limit and detection accuracy drift, etc., achieving significant social and economic benefits, and extending water quality. The effect of reducing operating time and reducing R&D and manufacturing costs

Active Publication Date: 2017-08-18
OCEAN UNIV OF CHINA
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Problems solved by technology

[0003] The sampling pump attached to the commercially available sensor, as the measurement depth increases, the control accuracy of the flow rate / flow rate becomes worse and worse, resulting in a drift in the detection limit and detection accuracy of the sensor, which affects the accuracy of the measurement result
In 2013, the German TriOS company and the Canadian Satlantic company successively launched the direct measurement of NO3 based on ultraviolet light. - Sensor products, but limited by optical path design, sample collection flow rate fluctuation interference, detection limit is 0.5μM, due to equipment pressure limit, the current use depth does not exceed 500m
The light source of this type of sensor has high energy density, long luminous time and stable performance, but at the same time, it has high power and high energy consumption
For sensor systems powered by underwater batteries, the integrated use of multiple single-function sensors will seriously affect the underwater endurance time, thus limiting its scope of use

Method used

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  • Seawater multiparameter sensor based on full-wavelength spectrum method
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  • Seawater multiparameter sensor based on full-wavelength spectrum method

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] When detecting multi-parameters in seawater, in order to improve the battery life of multi-sensors and improve the pressure resistance performance of the overall device, this embodiment integrates various parameters that can be detected by spectroscopy into the same detector. A single full-wavelength light source and the same detector are used to simultaneously measure multiple parameters to reduce overall energy consumption, facilitate the improvement of the withstand voltage performance of the entire device, and expand the application range of the entire device. At the same time, a set of ...

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Abstract

The invention relates to the technical field of environmental chemistry monitoring, in particular to a seawater multiparameter sensor based on a full-wavelength spectrum method. The seawater multiparameter sensor comprises a housing, wherein a filtering unit, a pressure reduction unit, a temperature-salinity monitoring and controlling unit, a detection unit, a waste liquid tank and a power supply. The seawater multiparameter sensor based on the full-wavelength spectrum method applies a single detector to achieve the multiparameter detection purpose based on spectrum detection. Due to the fact that multiparameter detection is achieved by adopting the spectrum method, most of devices are shared, the overall energy consumption can be reduced, the underwater operating time can be prolonged, the cruising power is improved, and possibility is provided for system integration. By adopting the design, the seawater multiparameter sensor is integrated in the same double-layer pressure-resistant cabin, normal work of the multiparameter sensor under the deep sea condition can be ensured, the operation that a titanium alloy coated sensor housing is designed for a single sensor is also avoided, and the cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of environmental chemical monitoring, in particular to a seawater multi-parameter sensor based on full-wavelength spectroscopy. Background technique [0002] With the increasing requirements for the development and utilization of marine resources and the protection of the marine environment, the demand for real-time and accurate measurement of various physical and chemical parameters in seawater is increasing. The international Argo program and the "Transparent Ocean" program being implemented in my country all require in-situ monitoring technology to continuously collect a large amount of data. For example dissolved colored organic matter (CDOM) CDOM, dissolved organic carbon DOC, nitrate (NO 3 - )NO3- and other parameters are essential and important parameters in marine survey and environmental monitoring. [0003] The sampling pump attached to the commercially available sensor, as the measurement depth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18G01D21/02
CPCG01D21/02G01N33/18
Inventor 张婷祁黎明崔冰瑞
Owner OCEAN UNIV OF CHINA
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