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Technology Monitoring

Environmental control has become a major challenge in many areas such as the energy industry for which the implementation of rapid, sensitive and reliable control tools has become strategic.

In this area, Kloé innovates by offering a full range of optical monitoring and detection solutions for all sectors of activities that require the deployment of a single string network of passive sensors (no electrical power) which ensure the monitoring of changes in temperature, mechanical stress (pressure, torsion, vibration...) or even the concentration of a specific gas.

Given its know how, particularly in optical integration and developments based on optical fibers, Kloé now offers a complete line of incorporated patented optical sensors dedicated to different types of measurands (Hyperlink "top" sensor range), a dedicated integrated query system (hyperlink "top" query range) and provides software tools assuring the acquisition, interpretation, display and data saving collected by the sensors (Hyperlink "top" software tools).

Kloé also has a team of optical fiber experts and a network of experienced partners to offer you complete solutions ranging from the design phase of your tailored monitoring system to its on-site commissioning. Kloé thus will support you on-site in all your projects using optical fiber based solutions.


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Optical fiber quasi-distributed sensing technique

The monitoring technology developed and patented by Kloé relies primarily on a linear distribution of sensors arranged along one (or more) optical fiber detection cables.
Combined with appropriate electronic equipment, dedicated to the querying of these sensors, this technology allows real-time tracking of changes of different measurands (temperature / gas / mechanical stress), generates alerts based on configurable thresholds levels, pinpoints with precision the reported events, and saves the whole set of data.
The sensitivity and responsiveness offered by this technology are today the optical fiber solution of choice for leak detection.
Finally, due to their compact size (diameters from 0.2mm to several millimeters), optical fibers and optical detection cables easily fit in many configurations including environments where integration may seem delicate.





Sensing principle

Each sensor installed along one optical fiber, called Bragg grating, has a unique optical signature, called Bragg wavelength (different for each sensor).
A broadband optical signal is sent at regular intervals in the optical fiber that constitutes the detection cable so as to simultaneously query each of these sensors, providing an update of the information recorded in seconds.
The sensitivity of each sensor being systematically calibrated from the factory, where one of them is subject to the stimulus to which it is sensitive (temperature, mechanical stress, gas), its Bragg wavelength shifts, respectively, to a lower or higher wavelength depending on the event, in proportion to it.
Thus, for software interpretation of this phenomenon, it is possible to have in real time (without any need for post processing), the intensity value of the measurand observed at any point in the materialized line by the presence of a sensor.
These sensors also remain extremely sensitive to events located on either side of their position; they can transcribe information relating to events occurring in the space located between two sensors.