A neural network-based water quality monitoring device for a marine ranch includes a floating board and a host computer monitor. The host computer monitor is disposed on a top of the floating board, and the host computer monitor is provided with a water quality monitoring system, and the water quality monitoring system is configured to collect water quality parameters of the marine ranch and analyze collected water quality parameters. The environmental monitoring unit is configured to use a hyperspectral water quality multiparameter monitor to monitor continuous spectral segments within a target wavelength range in water body in the marine ranch to monitor in real time data including a concentration of dissolved substances in the water, growth of algae, water pollution, water color, and presence of solid floating objects on water surface. The device can apply multiple water quality tests to improve the effectiveness and accuracy of water quality monitoring.

An apparatus for measuring the absorbance of a substance in a solution includes at least one sample cell arranged to contain the solution that is at least partially transparent to light of a predefined wavelength spectrum, at least two light passages through the at least one sample cell, each of the light passages having a known path length, an LED light source arrangement including at least two LEDs, each arranged to emit a light output with a wavelength within the predefined wavelength spectrum. A plurality of optical fibers, one for each light passage, is arranged at each LED for receiving the light output and guiding it to the light passages. A method for measuring the absorbance of a substance in a solution includes providing the LED light source arrangement with an associate fiber bundle for each LED.

A method, device and a system of determining a concentration of one or more analytes in a sample is disclosed. In one aspect of the invention, the method includes introducing the sample through a channel. The method further includes illuminating the sample with light having varying wavelengths. Additionally, the method includes obtaining an image of the illuminated sample at each of the wavelengths. Furthermore, the method includes analyzing the image to determine the concentration of the one or more analytes.

An apparatus for acquiring a wavelength and polarization state of light for imaging a structure at least partially obscured, in a visible wavelength range, by a liquid, is provided by the present disclosure.

This drone comprises a sensor for measuring representative data, comprising at least one measurement cell that is open to the atmosphere, at least a first laser source configured to inject, into the measurement cell, a first laser beam at a first wavelength characteristic of a first gas to be detected and a second laser source configured to inject, into the measurement cell, a second laser beam at a second wavelength characteristic of a second gas to be detected. The measuring sensor comprises a detector common to the two laser sources, said detector being configured to detect a first measurement signal originating from the measurement cell and resulting from injection of the first laser beam into the measurement cell and a second measurement signal originating from the measurement cell and resulting from injection of the second laser beam into the measurement cell.

A method, device and a system of determining a concentration of one or more analytes in a sample is disclosed. In one aspect of the invention, the method includes introducing the sample through a channel. The method further includes illuminating the sample with light having varying wavelengths. Additionally, the method includes obtaining an image of the illuminated sample at each of the wavelengths. Furthermore, the method includes analyzing the image to determine the concentration of the one or more analytes.