In-Place, Integrated, Deformation/Vibration Inclinometer Array
SAA is a rope-like array of sensors and microprocessors that fits into a small (27 mm; 1.05" ID) casing. Any deformation that moves the casing is accurately measured as a change in shape of the SAA.
Vibrations may also be measured, at multiple points. Most SAAs are shipped on a reel, can be easily installed, and can be up to 100 m (330') long.
SAA is re-useable. The same array can be used for horizontal or vertical measurements.
In brief:
- Length of segments: 30 or 50 cm (12” or ~19”)
- Each segment has three MEMS accelerometers
- Segments are connected by flexible joints
- In-array microprocessors collect and send digital data
- Two forms: “Field” and “High-speed Research” (SAAF and SAAR)
- Measurements are based on tilt, like inclinometer measurements ….But:
- Arrives on a reel
- Installs in inexpensive, locally available, 27 mm (1.05”) ID PVC electrical conduit.
- Withstands huge deformations
- Unlikely to be trapped in casing
- Measures deformation at typically hundreds of locations
- The same array can be used vertically or horizontally (slope or subsidence)
ShapeAccelArray (SAA)
An example of using SAA’s to monitor slope stability next to US Route 2 in Minnesota - US Rt2, MN (PDF, 930KB)
Background Material
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Measurand Inc., 2111 Hanwell Road, Fredericton, NB, Canada, E3C 1M7,
Chris Gairns Tel: (506) 462-9119
E-mail: SAAsales@measurand.com