OSMOS Canada a été créé en 2008. Son siège social est situé à Montréal. Il fait partie du réseau mondial Groupe OSMOS, présent dans une vingtaine de pays.
OSMOS Canada offers the whole range of surveillance engineering services, if necessary, in partnership with other recognized and well-known players.
OSMOS stands for “Optical Strand Monitoring System”, that is, a system which monitors using optical strands.
OSMOS has installed numerous systems throughout the world: over 500 in 17 countries (USA, Canada, Germany, Austria, Switzerland, Belgium, Holland, France, the UK, Denmark, Spain, Monaco, Russia, Japan, China, South Korea and Australia)
OMOS has installed its systems on the most diversified structures: including bridges, geotechnical structures, historic buildings, railway-related structures, hydraulic structures, industrial structures, real estate and public buildings.
Owing to the fact that they are robust and long-lasting, the oldest systems are still in situ: in France, the Eiffel Tower (13 years old), Stade de France football stadium (10 years), and many others installed over 8 years ago.
The most prestigious include the following: in France: the Eiffel Tower, Napoleon’s tomb (in the Invalides museum), the Louvre and in many cathedrals; France-UK: the Eurotunnel; in the US: the Ground Zero Area in New York.
Au Canada: Pont Champlain, Viaduc Henri-Bourassa, Viaduc Frontenac, Pont Coaticook et stations du métro de Montréal
OSMOS Canada sensors are able to measure deformations over long distances (but not only), within a precision in the order of one micron. These measurements are reliable over years. They are particularly suited to the long-term static and dynamic surveillance of civil engineering structures. OSMOS sensors are operational immediately, and in the most difficult environments. Users can manage them after only a short course, since special qualifications in optics are not required.
The OSMOS Canada system is the only one of its kind in which parameters are tracked in relation to the order in which problems affect the structure: firstly, defects which are early warning signs and thus critical, since they affect the stability of the structure; secondly, those which are marginally less important and arise as a result of the first.
Consequently, the OSMOS system has been designed to use different types of sensors:
- Firstly, sensors which pick up primary defects: OSMOS sensors;
- Secondly, sensors which find the effects of the primary defects, such as inclinometers (tilt sensor) and accelerometers;
- Lastly, sensors which identify causes: temperature sensors, anemometers, piezometers (small diameter water wells).
Independent laboratories in France, Germany, Belgium and Japan have tested the performances of OSMOS systems. OSMOS produces all its systems under the strictest conditions in terms of quality control.
No, OSMOS is the only producer in the world of the OSMOS monitoring system. The production plants for manufacturing OSMOS sensors are solely in France.
The main types of optical fibre sensors for structural surveillance available on the market are: the Fiber Bragg Grating (FBG) sensors, the Extrinsic Fabry-Perot Interferon (EFPI) meters and the Brillouin sensors. They use principles other than changes in light intensity, which is the principle chosen by OSMOS because it has many advantages.
Optical fibre sensors which attempt to use alternative parameters are not really suitable for being embedded in building structures for the purposes of precision surveillance over the long-term. Most of them are used in telecommunications and have a number of defects such as not being very robust or reliable in the medium-term. Nor are they very satisfactory in terms of value for money.
OSMOS Canada sensors are far more efficient than other sensors in terms of the dynamic collection and recording of data.
Optical fibre sensors take measurements by using the variations in the light beam caused by the object which is being measured. This means that they are insensitive to exterior influences such as electromagnetic fields (e.g. lightning, high voltage wires), corrosion, fluctuations in temperature and ageing.
The cost of OSMOS sensors and the monitoring station is similar to that of traditional, equivalent sensors. Moreover, taking into consideration the fact that the system is easy to install and has a long useful life, the OSMOS system competes most favourably with traditional systems, as well as giving better results.
OSMOS sensors have been especially designed to give the most vital information about structural stability, i.e. where stress is concentrated, which can be detected by variations in the level of the stress as well as by displacement. In consequence, OSMOS sensors replace sensors which function on the basis of stress or displacement, such as LVDT inductive sensors, wire vibration measurements, resistive stress gauges, and extensometers with rods or threads. Depending on the application, they may be used to replace inclinometers, whether they are geodesic or topographic.