Deck Sensor – Structural Health Monitoring

By Cody Corporation

DECK Sensors

The Deck device is a wireless sensor that allows measuring the dynamic amplitude of the displacement with an accuracy of 0.01 mm and the vibration frequency (through an FFT algorithm) of any structure on which it is applied. On each sensor, a threshold can be set remotely via the Move Cloud Platform. Each sensor continuously samples the oscillation amplitude and, if this threshold is exceeded, then the sensor records and transmits the 10 seconds before and the 20 seconds after the event. It is full wireless, and the battery can last for eight years.

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APPLICATIONS

Railways Monitoring

Monitor the ground displacement (settlement or lateral movement) and correlates the amplitude of oscillation of the sleepers with the variation of the ballast.

Bridge Monitoring

Detect vibration trends as displacement (mm), each event is processed with the FFT algorithm (Fast Fourier Transform), used to calculate the frequency response of the oscillations more quickly.

The Deck sensor is a wireless device that allows measuring the dynamic amplitude of the displacement with an accuracy of 0.01 mm and the vibration frequency (through an FFT algorithm) of any structure on which it is applied. On each sensor, a threshold can be set remotely via the Move Cloud Platform. Each sensor continuously samples the oscillation amplitude and, if this threshold is exceeded, then the sensor records and transmits the 10 seconds before and the 20 seconds after the event. It is full wireless, and the battery can last for years. It also mounts a temperature sensor.
The Deck sensor transmits accurate readings from the site via the LoRaWAN wireless communication protocol via a Gateway. You can view and interact with your data online using the Move Cloud Platform. There are multiple data processing and correlation algorithms developed by Move. Ideal for dynamic monitoring of large structures like bridges and overpasses.

Key Parameters:

Wireless dynamic displacement sensor
Uniaxial measurements parallel to the gravitational axis (Z) or to the perpendicular axis (X or Y)
Integrated temperature sensor
Extremely easy installation
Ultra low noise performance
Resolution of 0.012mm, 0.024mm; Shift Accuracy ±0,01 mm and range ± 1.5 mm, ± 3mm
Built-in long-life battery
Waterproof rating IP67

OPERATION
Operation with programmed acquisitions:	Record of an event for each oscillation that exceeds the activation threshold set by the user. For each event: acquisition of displacement for 30 seconds (10 seconds before and 20 seconds after exceeding the threshold). Acquisition of the temperature at each event.
Custom Operation Software:	It is possible to request custom features that the customer deems necessary for their business.
Sampling Frequency:	50 Hz

MEASUREMENT
Acquisition of:	Displacement and Temperature
Displacement Resolution:	0.012mm, 0.024mm
Shift Accuracy:	±0,01 mm
Measurement of Axis:	of the Parallel axis to the gravity axis (Z) or perpendicular (X or Y)
Range:	± 1.5 mm, ± 3mm
Displacement Bandwidth (-3DB):	0.70 Hz – 15 Hz
Temperature accuracy:	0,5°C
Temperature Resolution:	0,125°C

RADIO
Central Processing Unit:	ARM Cortex M0 32 Bit
Radio channel frequency:	868 MHz (EU) – 125 KHz BW (LoRaWAN)
Transmission Power:	14 dBm
Link coverage:	1km (line of sight with the Gateway)*

GENERAL DATA
Waterproof Rating:	IP67
Reliability:	Internal Watchdog (Inside the Microcontroller), External Watchdog (External to the Microcontroller)
Battery:	4 lithium battery type “D” 19Ah 3.6V
Operating temperatures:	-40°C / +85°C
Dimensions case:	140 x 170 x 65 mm
Dimensions case + plate:	200 x 200 x 80 mm
Weight:	2.4 Kg

INSTALLATION
Method:	Four-point mounting using screws and plugs (Ø10mm, L:30mm)
Site:	Fixing on the wall, on ceiling or ground

BATTERY AUTONOMY
Sample rate	Estimated autonomy
5 samplings / hour	2 years*

* Wireless coverage of the device may vary depending on the scenario.

* Battery life may shorten when operating in extreme temperatures.

Easy installation of the Move wireless monitoring system
The installation of an entire wireless sensor system on site is quick and easy: simply mount each device with at least two screws on the structure you want to monitor and power the LoRaWAN Gateway. You can configure the entire system remotely, before, during or after installation, using your laptop or tablet. After assembly and setup, the Move wireless monitoring system will start measuring and you can start monitoring remotely.

Operation of the Move wireless monitoring system
The wireless sensor system automatically communicates the measurement data via LoRaWAN with the on-site Gateway which in turn sends the received data via 4G or LTE to the online servers. The Move Cloud Platform is the cloud-based web tool that allows you to access, view and export your measurement data and configure the settings of the entire sensor system. You can access the Move Cloud Platform 24/7 from any location or device around the world. One of the main advantages of the Move Cloud Platform is that it offers remote access to measurement data and allows remote configuration of all installed sensors. This saves time and labor. In addition, you can analyze the measurement data using processing algorithms included in the service. Perform complex calculations, correlations and analyzes automatically and effortlessly. With the touch of a button, you can export measurement data in CSV format. You can also easily configure alerts to multiple recipients who will receive threshold cross notifications via email.

Easily install the entire system on the structure without the use of wiring.
Configure all wireless sensors quickly and remotely.
View real-time measurement data wherever you are, on any device, 24/7.
Process the data collected through the implemented algorithms.
Constantly monitors the operating status and signal quality of the system remotely.
Customize your alarm notifications and receive overrun notifications by email.
Optionally, you can integrate data on your platform using an MQTT bridge, FTP or through API calls.

Datasheet Wireless Tiltmeter – DECK-Datasheet-Move-Solutions

Instruction Manual – Instruction-Manual-Move-Solutions