ACCELERATION DETECTORS Anastasia Kravtcova Mikko Heiskanen Sensor Technology

ACCELERATION DETECTORS Anastasia Kravtcova Mikko Heiskanen Sensor Technology XX 00 AA 41 -2004 May, 2014

Contents Working principle Characteristics Interface electronic circuits Materials and manufacturing Different types Applications

Working principle of an accelerometer Properties of rotating masses Aviation Newton's and Hooke's laws of spring action Industry

Characteristics of an accelerometer Sensitivity Transfer function Frequency response Acceleration rage Sensitivity change due to temperature Nonlinearity Zero-g level Cross-axis sensitivity Noise density

Interface electronic circuits ADXL 203 accelerometer signal conditioning circuit x and y axis of ADXL 203 AD 8608 quad amplifier EVAL-CN 0189 -SDPZ evaluation board AD 7887 ADC

Materials and manufacturing technologies Prescription Making powder Shaping Silver hardening Polarization Mixture Removing grease Silver painting Checks Drying Crushing into pieces Hardening Grinding

Different types of accelerometers • Hall-effect accelerometer • Potentiometric accelerometer • Capacitive accelerometer • Piezoresistive accelerometer • MEMS accelerometer

Applications of accelerometers • Triggering airbag Industry Leisure Education Sports deployments • Monitoring of nuclear reactors • Measuring gravity • Orientation or vibration of an object • Using in cell phones, washing machines or computers

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