26 August 2010
MEMS motion sensing technology enables development of portable cpr rescue device
A new palm sized cpr device, that measures the rate and depth of chest compressions administered by medical staff, incorporates Analog Devices' mems technology.
Zoll Medical's PocketCPR device uses an ADI digital iMEMS accelerometer to convert the motion of PocketCPR into real time measurement data enabling rescuers to achieve the right amount of force and frequency of chest compressions recommended by the American Heart Association (AHA).
The device uses ADI's ADXL322 iMEMS low g high performance accelerometer with signal conditioned voltage outputs. Operating on power supplies as low as 2.7Vdc, the accelerometer is said to typically consume 340micro amps, and can be power cycled for extended battery life. The typical noise floor is less than 220micro g per root hertz, which enables small tilt changes to be sensed using the narrow bandwidths (<10 Hz) typical of human motion.
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