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Optical Displacement Sensor Node

Optical Displacement Sensor Node

The Optical Displacement Sensor Node is an instrument which uses optical means to take high precision displacement measurements. These outputs are then passed through Senceive’s wireless communications network to a Gateway. It can also be combined with Senceive’s world-leading triaxial tilt sensor to obtain high precision tilt measurements that are linked to an external reference.

The distance measurement provides information about the deformation of a targeted structure and the tilt measurement informs the user on the stability of the sensor itself and of the reference structure where it is mounted.

Optical Displacement sensing is ideal for many structural and geotechnical monitoring applications, including those measuring:

  • Convergence/divergence for tunnel/arch intrados or bridge abutments
  • Vertical movements for structural settlement/heave
  • Lateral movements such as rail track slew
  • Earthworks and embankment movement
  • Water level monitoring/dewatering
Optical Displacement Sensor Node
Optical Displacement Sensor Node
Optical Displacement Sensor Node
Optical Displacement Sensor Node
Optical Displacement Sensor Node
Optical Displacement Sensor Node
Railway station platform monitoring
ODS monitoring temporary props
Tunnel monitoring
ODS target
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  • Fully integrated unit
  • Extremely low noise performance
  • Optical sensor resolution of 0.1 mm and repeatability of ± 0.15 mm
  • Triaxial tilt sensor resolution of 0.0001° (0.0018mm/m) and repeatability of ±0.0005° (±0.009 mm/m)
  • Integrated long life battery
  • 10 years battery life, including when acting as a relay node within the mesh communications network
  • Easy to align with target when using the magnet triggered aiming mode
  • Integrated temperature sensor
  • Versatile mounting options
  • Waterproof to IP66/IP67/IP68
  • Firmware is remotely upgradeable over the air via the gateway reducing costly site visits (FlatMesh)

FlatMesh Optical Displacement Sensor Node - FM3N-LDS-IX

GeoWAN Optical Displacement Sensor Node - LR3N-LDS


FlatMesh Physical specifications

Parameter Value
Dimensions excluding antenna 90 x 90 x 60 mm
90 x 96 x 60 mm (including vent)
Total Mass 0.6 kg (approx.)
Housing Material Die cast aluminium

(BS EN 60529: 1992 + A2: 2013)

IP66 / IP67
IP68 at 1 m for 24 hours
Mounting Options Clearance holes for M4 socket head screw in bottom, M4 blind holes in side.
Plates and brackets available for magnetic fixing, track bed, stake and pole mounting, and many other applications
Operating Temperature Range -10°C to +50°C (full functionality)
-25°C to +70°C (mesh radio, temperature and tilt only)

Optical Sensor Specifications

Parameter Value
Resolution 0.1 mm
Repeatability ±0.15 mm
Range 50 m (natural surface)
100 m (white target)
150 m (reflecting target)
Laser Type Class 2, 655nm (visible red)

Tilt Sensor Specifications (-IX version)

Parameter Value
Resolution 0.0001° (0.00175 mm/m)
Repeatability ±0.0005° (±0.0087 mm/m)
Range ±90°


Data Sheets
Case Studies
Get in Touch

For more information on our Optical Displacement Sensor Node, call +44 (0)800 033 7731 or email [email protected]