A Three-Tier Architecture for User-Centric Ubiquitous Networked Sensing

Table 1

Specification of uCore Recorder.

Wireless sensor node	MICA2DOT
Processor	Atmel ATmega128
Wireless	315 MHz ISM Band
Flash ROM	512 K bytes
Rotary encoder	ALPS EC12E24244A3
Resolution	24 pulse
Switch	Yes (Act.Force 6N)
2-axis accelerometer	Analog Devices ADXL311
Range	±2 g
RFID reader	SkyeTek SkyeRead M1-Mini
LED	Full-color LED × 2
Battery	Korea PowerCell PD2450 (Li-Ion)
Size (mm)	42(W) × 42(H) × 77(D)
Weight	63 g