LUNITEK – Soluzione IoT per il Monitoraggio e il preallarme degli spostamenti

LUNITEK – Soluzione IoT per il Monitoraggio e il preallarme degli spostamenti

GEA SYSTEM – IoT solution for monitoring and early-warning of displacements

Based on:

  • Networks of GNSS L1 low-budget sensors
  • 3-D displacements with millimetre level repeatability

 

Application fields:

  • Landslides, subsidence, co-seismic deformations
  • Critical infrastructures
  • Deformations due to human
    • Activities: Excavations, injection/extraction of natural gas

 

Features:

  • GEASYSTEM nodes are composed of lightweight, compact, low energy consumption, single-frequency GNSS stations, power supply modules based on photovoltaic panels and 868 MHz wireless interfaces for the transmission of data
  • Receivers installed at a monitoring site form wireless mesh networks, transmitting in real-time GNSS raw observations and telemetry data to a gateway node, equipped with internet connectivity. Network data are collected at a server where a specific SW computes displacements with millimeter level repeatability
  • A dedicated dashboard (client application) allows the User to display data on a map and on graphics with time series of 3-D displacements and telemetry data
  • GEASYSTEM can be configured to send alert e-mail in case of system malfunctions or when specific User defined displacements thresholds are exceeded, thus allowing forecasting of possible dangerous events
  • Publication of displacements and telemetry data is made through REST web services allowing the integration of measurements in pre-existing and
    custom dashboards

 

HARDWARE SPECIFICATIONS

GNSS
Receiver: U-BLOX M8T
Antenna: MOBI MBGPS GNS-30-001; frequency range 1575.42±10 MHz; gain 30±3 dBi; SMA female connector; 3.3V (different options on request)

 

WIRELESS CONNECTION
Type: 868 Mhz, link wireless 0.5W. TDMA proprietary transmission protocol
Antenna: Directional gain 13dBi or omni-directional gain 3dBi; SMA female connector; 3.3V (different options on request)
Range: 8 km LoS
Networking: Up to 14 nodes connected to a single gateway; mesh network; each node can be configured as node or gateway by the User

 

POWER
Photovoltaic panel: 20Wp (optional 50Wp)
Battery: 12V 12Ah (144Wh); charge from -15 to 50 Celsius
Autonomy: Potentially unlimited (considering 2 hours of sunlight per day – 20Wp panel); a fully charged battery at 20 Celsius can power up the station for more than 12 days in case of total dark
Power consumption: < 390mW on average (including antenna)

 

 

OTHER
Protection: IP65
Dimensions: GNSS Unit 17x10x5.5 cm

GNSS Antenna 8×13 cm

Photovoltaic panel (20Wp): 34x50x2.4 cm

Wireless antenna (Yagi): +13dBi Whip. 63×18 cm

 

DISPLACEMENTS CALCULATION SOFTWARE

 

GEASYSTEM GNSS CORE
Programming language: C and C++
3rd party libraries: RTKLIB (v. 2.4.2, BSD-2 license); used for GNSS data reading and clocks syncronization
Processing: Proprietary double-differences batch least square estimator developed to reach maximum performances in term of displacements repeatability for static monitoring applications
Repeatability: From 1 to 3 mm RMS for 24 hours batch of data (according to distance and height difference between reference and rover and to satellite visibility and possible multipath)

 

Per maggiori informazioni contattaci: https://www.lunitek.it/contatta-sensoristica-e-acquisizione-dati/

settembre 7, 2018/ by / in