1. Lelantos Technologies
Wireless Sensor Technologies for a Smarter Planet
BC-129, Urbtech Matrix Tower B-4, Sector 132,
Expressway Noida (U.P.) 201301
T : +91 120 6758700 F : +91 120 6758650
E : info@lelantos.in W : www.lelantos.in
Sensor Based
Structural Health Monitoring
Monitors Cracks
Detects Tilt
Senses Vibration
Senses Seismic Activity
Measures Strain
Calculates Stress

2. LelantosTechnologies
is the pioneering agency in the field of
Structural Health Monitoring, using advance
Fiber Optics to precisely assess the health of
structures.
With increasing size and complexity of
buildings and structures, there is a need for
high-performance autonomous sensing
systems for Structural Health Monitoring that
would prevent structural failures by alarming
the building operators before any damage
reaches a critical state. Presently in India,
outdatedinstrumentationtechniquesareused
in conjunction with schedule-based visual
inspections to monitor the integrity of
structures but such an exercise is highly
unreliable and untimely. For instance, it is
Lelantos' Fiber Bragg Grating sensors are state of the art transducers that transform a static and dynamic distance
variation into a change in reflected wavelength of a pre-stressed Fiber Bragg Grating that can be measured using
Lelantos'readingunit.
Strain ?Vibration
Deformation ?Load
Displacement ?Pressure
Crack Openings ?Water Pressure
Stress ?Temperature
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?Tilt ?Rebar Oxidation
Structural Parameters
Monitored
imperative to know the state of the building immediately after a seismic activity in order to decide whether it is
safe to inhabit again but in majority of cases building operators tend to wait for several weeks or even months
before arranging an inspection, thereby assuming a huge risk of life and property. Lelantos' Real Time Structural
Health Monitoring Solution would let the building operators know the state of health of their buildings right after
an earthquake and allow them to decide whether it needs repair before inhabitation or commencement of
operations.Thus,reducingtheriskoflivesandalsoofferinghugesavingsthroughreductionindowntime.
Methodology
l
strategy in cooperation with the infrastructure
owner, and install sensors at pre-selected
locationsofthestructure.
lThe sensors are connected to a reading unit
that oversees the overall management of the
instrumentsandcollectsthedata.
lThe data is analyzed in real-time against limits
preset by the owner of the structure. In the
event limits are exceeded, reading unit
automatically alerts the infrastructure owner
bySMS,email,orphonecalls.
Lelantos' technicians design a monitoring
Sensor Installation Diagram

3. The FBG deformation sensors are transducers that transform a static or dynamic
distance variation into a change in reflected wavelength of a prestressed Fiber Bragg
GratingthatcanbemeasuredwithSMARTEC‘sFBGreadingunits.
The sensor is composed of an active and a passive part. The active part contains the
measurement fiber and measures the deformations between its two ends,
transforming it into a wavelength shift of the Fiber Bragg Grating. The passive part is
insensitive to deformations and is used to connect the sensor to the Reading Unit. In
the passive part of the sensor, it is possible to install a loose Fiber Bragg Grating for
temperature sensing and compensation. The sensors are available in singleended,
doubleended and chained configuration. It is possible to connect up to 6 fullrange
temperature compensated sensors. The sensors are terminated with E2000APC
connectors or on user‘s specifications. The sensors can be quickly and easily installed
without affecting the construction schedule. They can be directly embedded in
concreteandmortars,orsurfacemounted.
MUST DEFORMATION SENSOR FBG (Fiber Bragg Grating)
ACTIMON-X1 ACCELEROMETER / INCLINOMETER
The AcTiMon-X1 represents a new breed of sensor that is designed to
make collecting and analyzing structural information easier than ever
before. The AcTiMon-X1 is a versatile all-in-one sensor for monitoring
many conditions. It combines 3-axis accelerometer, 2-axis inclinometer
andatemperaturesensorintoonesmallsensingmodule.
The AcTiMon-X1 is a complete monitoring solution that connects directly to a computer or a network using
standard Ethernet or USB connections. This connection scheme enables AcTiMon-X1 users to connect to their
laptop for quick investigations and enables low-cost schemes for integrating sensors into an existing or new
network.Whenaddingsensorstoabuilding,theAcTiMon-X1 canbepluggedintoanexistingEthernetnetwork
and completely bypass the need to run additional cables. For structures that don’t have networks, Ethernet
cablesprovideareliable,low-cost,one-cablesolutionforconnectinganddeployingAcTiMon-X1’s.
TECHNICAL SPECIFICATION
Length of measurement basis 10cm to 2 m
Strain resolution / Accuracy 0.2 µe / 2 µe
Measurement range 0.5 % in shortening, 0.75 % in elongation
Proven Longevity
(if correctly installed,
respecting installation
procedures)
95% to 100% after embedding in concrete
90% to 95% after 3 years (track record of at least
1000 sensors)
Operating temperature -40° C to +80° C (continuous)
-50° C to +120° C (short time: 1 day)
-50° C to +170° C (upon request)
Operating pressure 5 bars (50 m deep in water)
Waterproofing 5 bars (50 m deep in water)

4. SPECIFICATION
Size 12 x 11 x 5.8 cm
Weight 0.57 kg
-40°C to 80°C
Environmental Rating
Connectivity
IP 67
1-M12 Ethernet, 1-M12 USB (max. length 75 m, 150 m
using PoE switch extender)
Communication Ethernet or USB
Power source
Power Consumption
Operating temperature range
200mA @ 5V
Ethernet (PoE) or USB
Specifications MEMS, 3-axis
Accelerometers Tiltmeters
MEMS, 2-axis
Measurement range ± 1.5 g ± 15°
Resolution 50 µg 50 µ°
Frequency response DC - 200 Hz n/a
Output sample rate Selectable up to 2000 sps 10 SPS
MUST VII FBG DYNAMIC READING UNIT
The MuST VII Dynamic reading unit is able to measure MuST FBG (Fiber
Bragg Grating) sensors. The system is designed for dynamic, long-term
measurements. The MuST VII Dynamic RU is integrated in a compact steel
housing designed for permanent installation in any structure that requires
continuousmonitoring.
The MuST VII Dynamic reading unit allows to measure 1 or 4 channels. On
each channel it is possible to connect up to 7 MuST deformation sensors, up
to 12 MuST strain sensors (depending on sensor type, see sensor datasheets
for details), or up to 25 MuST Temperature sensors. The unit contains a field
PCthatprovidesdataloggingandremoteinterfacingfunctionalities.
SPECIFICATION
Measurement resolution 5 pm
Linearity / Accuracy ±10 pm
100 S/s (500 Hz coming soon)
Measurement range
Sensors per channel
100 nm (1500 to 1600 nm)
Max 7 MuST (FBG) Deformation sensors
Calibration NIST traceable wavelength reference
Optical Connectors
Dynamic range
Sample rate
>25 dB
E-2000 AC (8°)
Up to 12 Strain FBG sensors Up to 25
Temperature FBG sensors
Available channel count 1 or 4 channels
Power Supply 230 V 50 Hz / 110 V 60 Hz Auto detect
Weight ~ 25 kg