PMIOT-VIBRA – Autonomous 3-axis IoT vibration sensor

Overview

The PMIOT-VIBRA is an autonomous vibration monitoring system integrating a tri-axial accelerometer, acquisition, storage and IoT communication in a single housing.

Installed directly on the structure, it continuously measures vibrations on the X, Y and Z axes and calculates indicators such as PPV, RMS, peak values and dominant frequency.

Results are transmitted to PMI-CloudVIEW to track trends, review events and receive alerts when thresholds are exceeded.

Transmission and monitoring

Measurement summaries can be transmitted periodically via LTE-M or NB-IoT, with Wi-Fi as an option.

In case of temporary network loss, data is stored locally and transmissions resume after reconnection.

In PMI-CloudVIEW, users can view PPV values on all three axes, history, detected events, alert thresholds and system status.

The system can monitor both continuous vibrations and one-off events.

Measurement and event detection

The PMIOT-VIBRA can be configured with two measurement profiles:

• 1–150 Hz with 800 samples/s/axis
• 1–400 Hz with 1 600 samples/s/axis

Local measurement remains active between transmissions. When a threshold is exceeded, the system can store the event signal in order to analyse its evolution before and after triggering.

Available acceleration ranges are ±2, ±4, ±8 or ±16 g.

Configure your system: here

Standards and data exploitation

The system can be configured to produce the indicators used in various vibration monitoring standards.

Depending on the selected configuration and validation, data can notably be used for monitoring based on:

• DIN 4150-3 – effects of vibrations on structures
• BS 7385-2 – evaluation of vibrations on buildings
• ISO 2631-2 – human exposure to vibrations in buildings
• Circulaire du 23 juillet 1986 – vibrations transmitted to buildings
• standards specific to railway infrastructure or to specific projects

The choice of thresholds and standard must be defined according to the application and project requirements.

Applications

The PMIOT-VIBRA is particularly suitable for monitoring:

• construction sites, earthworks and demolition
• sensitive buildings and monuments
• bridges and civil engineering structures
• road or rail traffic
• shocks and impacts
• industrial equipment and machinery
• temporary campaigns or permanent monitoring

FAQ

• Does the PMIOT-VIBRA measure vibrations on all 3 axes?
  Yes. Measurement is performed simultaneously on the X, Y and Z axes.

• What happens when a threshold is exceeded?
  The system can record the vibration event and store the signal in order to analyse its context.

• Can data be accessed remotely?
  Yes. Measurements are transmitted via LTE-M or NB-IoT to PMI-CloudVIEW. Wi-Fi is available as an option.

• Can the measurement range and frequency be adjusted?
  Yes. Several acceleration ranges and two measurement profiles, 1–150 Hz and 1–400 Hz, are available depending on the application.

PMIOT-VIBRA housing

The PMIOT-VIBRA is integrated in a compact industrial housing combining the sensor, acquisition, storage, power supply and communication.

• Format: compact autonomous housing
• Sensor: integrated triaxial MEMS accelerometer
• Antenna: external or integrated depending on the version
• Mounting: directly on the structure
• Use: indoor or outdoor
• Protection: IP67

Options

• configurable measurement and transmission frequency
• multiple threshold levels
• detailed event recording
• FFT analysis and dominant frequency
• temperature measurement
• enhanced synchronization or GPS depending on version
• external power supply, long-life battery or solar
• e-mail / SMS notifications
• data export and API
• configuration according to the project standard

Accessories

• mounting plate and bracket
• screws and anchors
• remote antenna
• replacement battery
• solar panel
• carrying case