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HydroResearch - Distributed Sensing System
HydroResearch started using fibre optics for temperature measurements in 1998. Since then, distributed sensing has developed rapidly. Today, HydroResearch uses distributed sensing for acquiring temperature, acoustic and strain data. Together with our partner Silixa, which is the leading manufacturer of distributed sensing systems, we provide temperature and acoustic sensing systems. If you are interested in this technique for your application, please contact us.
Distributed sensing is a technology that utilises the optical fibre as the sensing element. Measurements are done in real-time along the entire length of a fibre optic cable. The interrogator sends out a series of light pulses into the fibre. Back-scattering occurs along the fibre, and the interrogator gathers the return signal. As the speed of the light is known the origin of scattered light can be determined. This enables measurements at all points along the fibre.
Distributed sensing has a lot of advantages. Since the optical fibre is the sensor itself it is cost effective compared to point sensor if you want to monitor long lengths with high spatial resolution and it can easily be deployed even in the harshest and most unusual environments.