SunSPOT Wireless Modules Gurdip Singh and Shravanthi Kallem Pervasive Sensor Network Laboratory Computing and Information Sciences

Wireless sensor networks Sensing field Base stations PC and Displays

SunSPOT

-180 MHz 32bit ARM920T core 512K RAM 4Mb Flash Memory 2.4 GHz IEEE radio USB interface 3-axis accelerometer, temperature, light, touch sensors

3D Acclerometer Get the current acceleration along each axis getAccelX() getAccelY() getAccelZ()

3D Acclerometer To get the current acceleration relative to a previously measured acceleration. getRelativeAccelX() getRelativeAccelY() getRelativeAccelZ()

3D Acclerometer To compute the inclination, or tilt, of an axis getTiltX() getTiltY() getTiltZ()

Light/Temperature Light Temperature

Wireless network Base Station SunSPOTs

Patient Monitoring System

Goal Attach sensors to your body. Figure it whether you are moving: Sleeping Sitting Standing Walking ….

Accelerometers Tilted Vertical Horizontal

vertical horizontal vertical

Other postures/activities Attempting to get up from sleeping position Fall Slip

Light/temperature sensors Interference Battery power – transmission range