Experimental research and analysis of salinity measurement based on optical techniques

Zhao, Yong; Zhang, Bo; Liao, Yanbiao

doi:10.1016/s0925-4005(03)00292-2

Cited by 44 publications

(15 citation statements)

References 4 publications

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“…29,30 To measure the density to obtain the salinity of the water is not the best option for our application because the suspended particles that can be found in the aquaculture environment will affect the density value. Water density, conductivity, and light refraction can be used to measure the water salinity.…”

Section: Salinity Sensorsmentioning

confidence: 99%

Design and deployment of a smart system for data gathering in aquaculture tanks using wireless sensor networks

Parra

Sendra

Lloret

et al. 2017

Int J Communication

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The design of monitoring systems for marine areas has increased in the last years.One of the many advantages of wireless sensor networks is the quick process in data acquisition. The information from sensors can be processed, stored, and transmitted using protocols efficiently designed to energy saving and establishing the fastest routes. The processing and storing of data can be very useful for taking intelligent decisions for improving the water quality. The monitoring of water exchange in aquaculture tanks is very important to monitor the fish welfare. Thus, this paper presents the design, deployment, and test of a smart data gathering system for monitoring several parameters in aquaculture tanks using a wireless sensor network. The system based on a server is able to request and collect data from several nodes and store them in a database. This information can be postprocessed to take efficient decisions. The paper also presents the design of a conductivity sensor and a level sensor. These sensors are installed in several aquaculture tanks. The system was implemented using Flyport modules. Finally, the data gathering system was tested in terms of consumed bandwidth and the delay Transmission Control Protocol (TCP) packets delivering data from the sensors.

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Section: Salinity Sensorsmentioning

confidence: 99%

Design and deployment of a smart system for data gathering in aquaculture tanks using wireless sensor networks

Parra

Sendra

Lloret

et al. 2017

Int J Communication

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“…The optical refractive index and absorption coefficient are two inherent characteristics of a substance. An experimental setup for salinity measurement with a position-sensitive-device (PSD) was developed based on the methods utilizing refractive index measurement [1]. It was reported that semiconductor materials had been used for the pressure or temperature measurement based on the optical absorption effect [2,3], and a fiber-optic sensor was proposed using optical absorption effect for field application [4].…”

Section: Introductionmentioning

confidence: 99%

Novel optical sensor for simultaneous measurement of liquid concentration and temperature

Peng

Zhao

Ying

et al. 2007

Optics & Laser Technology

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“…Optical Fiber Sensing of Salinity and Liquid Level electromagnetic interference, compact size, small sensing unit, safety in hazardous environments, high sensitivity, low noise, high durability against seawater corrosion, the possibility of processing the signal at a long distance from the sensor with little degradation, and so on [1]. An optical fiber sensor for simultaneous measurement of temperature and salinity has been proposed in [2].…”

mentioning

confidence: 99%

“…The reflected light from the air-liquid boundary is very weak and its contribution to the received power is negligible. Based on the geometry of the refracted ray in the liquid, the virtual point source O 1 is located at a point z 1 can be written as: θ 2 = sin −1 sin θ 1 n , where θ 1 = si n −1 (NA), n is the liquid RI and NA is the fiber numerical aperture. The distance between O 1 and O, z 1 is given by:…”

mentioning

confidence: 99%

Optical Fiber Sensing of Salinity and Liquid Level

Yang

Qiao

Lim

et al. 2014

IEEE Photon. Technol. Lett.

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This letter reports a fiber optic sensing technology for the detection of salinity and liquid level of a given solution. The operation principle is based on the displacement measurement in a large measuring range by generating a variety of outputs for various sensing objectives. The proposed sensor is investigated analytically and experimentally. The achieved salinity sensitivity is 8.589 /%, in addition, the proposed sensor exhibits an excellent liquid level sensitivity of 0.4421 /mm in the experiment.Index Terms-Fiber optic displacement sensor, refractometer, plastic optical fiber, intensity modulation.

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Experimental research and analysis of salinity measurement based on optical techniques

Cited by 44 publications

References 4 publications

Design and deployment of a smart system for data gathering in aquaculture tanks using wireless sensor networks

Design and deployment of a smart system for data gathering in aquaculture tanks using wireless sensor networks

Novel optical sensor for simultaneous measurement of liquid concentration and temperature

Optical Fiber Sensing of Salinity and Liquid Level

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