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gLog WiFi

Wireless solution for structural monitoring

gLog WiFi

Wireless solution for structural monitoring

Vibrations reveal how a structure behaves.
gLog WiFi acquires, synchronizes and makes them available for analysis.

gLog WiFi is an autonomous wireless solution for Structural Health Monitoring (SHM) of bridges, viaducts and infrastructure.
It integrates a high-precision triaxial MEMS accelerometer, a data logger with internal memory and IEEE 802.11 WiFi communication.
Data acquired from multiple devices are synchronized and made available for OMA (Operational Modal Analysis), structural response assessment, FEM model updating and AI-based SHM applications.

KEY BENEFITS
	WIRELESS = WiFi communication & full remote configuration
	SYNCHRONIZED = Multi-device acquisition with < 2 ms accuracy
	OMA READY = High-precision acquisitions lasting up to 120 minutes
	RAW DATA = Raw acceleration data always available
	7 YEARS = With one 30-minute acquisition per day
	PROTECTION = Anodized aluminium housing, dust & water resistant

APPLICATION FIELDS
	Bridges and viaducts
	Buildings
	Railways
	Pedestrian bridges
	Dams and tunnels
	Inspections & testing

RESEARCH & COLLABORATIONS

Developed in collaboration with the Department of Engineering and Architecture
of the University of Parma, within the European CIRCoPAV project.

DISCOVER MORE ABOUT gLog

Explore all its features and see real-world application examples:

System & Features
https://glogw.pythonanywhere.com/brochure

Case studies
https://glogw.pythonanywhere.com/caseHistory

Photogallery

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BRIDGES & VIADUCTS

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PEDESTRIAN BRIDGES

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BUILDINGS & STRUCTURES

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DAMS & TUNNELS

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RAILWAYS

DIMENSIONS

EMC 2014/30/UE

Max. device power 1,44 W (3,6 V – 0,4 A)

Weight 800 g

0g offset (factory calibrated) ±5 mg (range ±2 g)

Accelerometer range 2 g / 4 g / 8 g

Accuracy 20 bit

Battery 3.6V, 14.8Ah lithium thionyl chloride

Battery protection Reverse polarity protection

Device synchronization < 2 ms

EIRP 19,5 dBm

Electrical connection USB Type-C

Estimated battery life 7 years (30 min/die)

Magnetic field sensor hysteresis 2 gauss

Magnetic field sensor polarity Omnipolar

Magnetic field sensor threshold 7 gauss

Max. microprocessor frequency 4 MHz

Max. samples per event 1.048.576

Max. working voltage 3.7 V

Maximum radio module frequency 240 MHz

Maximum sampling length 4 h

Min. working voltage 3V

Noise Spectral Density 25 µg/√Hz

Non volatile memory erase time 180 s

Non volatile memory size 2 × 64 MB

Nonlinearity 0,1% FS

Protection degree IP67

Radio frequency 2,4 GHz – IEEE 802.11

Radio module connector RF (es. Hirose U.FL)

Relative humidity 10…85%

RoHs 2011/65/UE

Sampling frequency 62,5 / 125 / 250 / 500 Hz

Sensitivity 256 LSB/g (range ±2 g)

Sensore Accelerometer MEMS triaxial

Temperature sensor offset ±2 °C

USB protection IEC 61000-4-2 level 4 (8 kV contact discharge)

USB protocol USB 2.0

USB speed Full Speed – 12 Mbit/s

Voltage sensor offset ±100 mV

Working temperature –10…+55 °C

	ACQUISITION AND CONFIGURATION
	Acquisitions can be scheduled or automatically triggered when an acceleration threshold is exceeded. The following parameters can be configured remotely via web app:
•	sampling frequency and range
•	date, time, duration and recurrence of scheduled events
•	trigger threshold and time over threshold

	REMOTE MONITORING
	The dashboard allows you to monitor last connection, last sampling, battery level, signal quality and error diagnostics, as well as view and download the acquired data.
	− Last connection
	− Last acquisition
	− Battery level
	− Signal quality
	− Error diagnostics
	Collected data can be visualized and downloaded for further analysis.

Data ready for OMA — no manual post-processing required —

Files downloaded from the platform are already synchronized, detrended and sampled at the nominal frequency.
Each dataset includes precise timestamps and triaxial acceleration data for all sensors, ready for direct import into the main Operational Modal Analysis environments.

SINCHRONIZATION INCLUDED

CSV / HDF5

PYTHON · MATLAB · ARTEMIS

FDD · SSI · EFDD

Your entire monitoring site under control, from PC or smartphone