Welcome to structural health monitoring department of Rasis Afzar co.


 

Milad Tower Monitoring System Description
Milad tower with the height of 435 meter is the fourth highest telecommunication tower in the world and considered the highest in the middle east.
In order to provide safe and multipurpose services it has been fully equipped with fiber optic structural health monitoring system.
A complete range of 16 multidimensional fiber optic accelerometers, 16 long gaged fiber optic strain/deformation sensors, 4 fiber optic inclinometers and 3 anemometers with the highest resolution and precise possible, recording every movement of the tower, and the information is online processed by the worlds number one vibration analyzes and monitoring softwares.
The monitoring system is installed with the following characteristics:

The system is mainly consist on fiber optic based sensor, having as main characteristic the insensitivity to electromagnetic fields. This characteristic will also guarantee long-term reliability and immunity from other external influences (e.g. cross talk). Conventional sensors are exceptionally used when no fiber optic sensors are available for a specific measurement type (e.g. anemometers).
The system is able to combine, store and manage data from sensors measured automatically, from manual measurements and other observations.

 

The data acquired by sensors are managed centrally with a unified user interface and will be stored in a consistent file system structure and partially in a relational database structure. Warnings can be issued based on pre-defined conditions.
All the sensors are connected to the Central Measurement Point using either optical fibers.
All sensors (strain, temperature, accelerometers and inclinometers) are read simultaneously with a typical (customizable) acquisition rate of 0.1 Hz (static measurements during normal operation of the system). Based on customizable pre-defined triggers, the system is able to automatically switch to dynamic measurements with maximal acquisition rate of 125 Hz.
System is able to monitor the structure behavior during the earthquakes, storms or any unpredictable events dynamical and continuously.

Many case studies have been done in this department since the establishment and execution of a few masterpiece projects are great proves to the above claim.
More over we have been fulfilled cooperations with the following organizations giving them Structural Health Monitoring engineering services:

Road Ministry of Iran
Rail and Truck Organization of Iran
National Iranian Oil Companies (NIOC)
National Iranian Gas Companies (NIGC)
Iranian Petrochemical Companies (IPC)
Yademan Saze engineering company (Milad Tehran Telecom. Tower)
   (Associated with Tehran Municipality)
Tehran Municipality Civil Engineering Department
Tehran Subway Company

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