Wireless SHM accelerometer

Move Solutions SHM accelerometer

This device is the latest, updated version of the Triaxial Acceleration Monitoring Sensor. The SHM Accelerometer is an extremely accurate three-axis wireless sensor capable of synchronising data samples with all other SHM Accelerometers in the system. Wireless synchronised sampling is a highly important feature that provides significant advantages in structural monitoring. Thanks to this capability, modal and vibration analysis can be performed on any type of structure. Sampling rates are variable and can be configured remotely. The SHM Accelerometer also retains the conventional activation-threshold operating mode. The battery-powered device has an operating life of up to 8 years and also features an integrated temperature sensor.

Wireless SHM Accelerometers transmit accurate readings from the site through a gateway using the LoRaWAN wireless communication protocol. Data can be viewed and managed online through the Move Cloud platform.

Like other Move devices, it is completely wireless and its battery lasts for years, depending on the transmission frequency, whether scheduled and/or triggered when a threshold is exceeded. The SHM Accelerometer also integrates a temperature sensor.

Key parameters:

• Wireless triaxial acceleration sensor
• Synchronised wireless sampling mode, scheduled sampling mode and trigger mode
• Relative synchronisation: 500 μs
• Activation-threshold operating mode
• Integrated temperature sensor
• Extremely simple installation with versatile mounting options
• Ultra-low noise performance
• 15-bit resolution (31.25 μg, 62.5 μg and 125 μg), accuracy of ±62.5 μg and ranges of ±0.512 g, ±1.024 g and ±2.048 g
• Integrated long-life battery
• IP67 protection rating
• The firmware can be updated remotely over the air through the gateway, reducing costly site visits

Main applications

Easy installation of the Move wireless monitoring system

Installing a complete wireless sensor system on site is quick and easy: simply secure each device to the structure to be monitored using at least two screws and power the LoRaWAN gateway. The entire system can be configured remotely before, during or after installation using a laptop or tablet. Once the system has been installed and configured, the Move wireless monitoring system will begin taking measurements, allowing remote monitoring to start immediately.

How the Move wireless monitoring system works

The wireless sensor system automatically transmits measurement data via LoRaWAN to the on-site gateway, which then sends the received data via 4G or LTE to the online servers. The Move Cloud Platform is a cloud-based web tool that allows users to access, view and export measurement data and configure the settings of the entire sensor system. The Move Cloud Platform can be accessed 24 hours a day, 7 days a week, from anywhere in the world and from any device. One of its main advantages is that it provides remote access to measurement data and enables the remote configuration of all installed sensors, saving both time and labour. Measurement data can also be analysed using the processing algorithms included in the service. Complex calculations, correlations and analyses can be performed automatically and effortlessly. Measurement data can be exported in CSV format at the touch of a button. Alerts can also be configured for multiple recipients, who will receive threshold-exceedance notifications by email.

• Easily install the entire system on the structure without any wiring.
• Configure all wireless sensors quickly and remotely.
• View measurement data in real time, wherever you are and from any device, 24 hours a day.
• Process the collected data using the implemented algorithms.
• Continuously monitor the operating status and signal quality of the system remotely.
• Customise alarm notifications and receive threshold-exceedance alerts by email.
• Optionally integrate the data into your own platform through an MQTT bridge, FTP or API calls.