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