Accelerometer

What is the definition of accelerometer?

A device used to detect and measure linear acceleration along an axis. MEMS is a common accelerometer technology.

Image depicts the operation of a simple MEMS accelerometer.

• The anchors (A) hold the proof mass (B) in position.
• The proof mass consists of a centre section (i), with several protruding fingers (ii).
• The sections of the proof mass between the centre section and anchors act as the springs (iii).
• The fixed electrodes (C) make up the differential capacitors, with a protruding finger from the proof mass between the capacitor electrodes.

When the accelerometer is at rest or is travelling at a fixed velocity (zero acceleration), the fingers are in the centre position between the electrodes, as shown.

What are the applications for accelerometer?

• Autonomous Systems
• Autonomous Agriculture
• Aerospace
• Automotive
• Defence
• Marine
• Subsea
• Surveying

What other terms are related to accelerometer?

• MEMS
• IMU
• INS
• Navigation

Read more about accelerometer or related topic

Advanced Navigation’s glossary covers the most common terms and definitions used in inertial navigation systems, acoustic positioning and robotics.

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MEMS GNSS / INS

FOG GNSS / INS

Satellite Compass

MEMS IMU

USBL

Transponders

Micro-AUV