RTLAB. Jo Hyeong-Gon

Contents.  LIDx  Power management  power consumption  Proposed LIDx sequence & timing  Life-span estimation  OAD  ZOAD  Progress & Further works  Q&A

Power management  How to  POWER_SAVING compile option  RX is off when idle  All Z-Stack tasks agree to permit power saving  Z-Stack tasks have no scheduled activity

Power management(cont’)

Power consumption  8051 core  Active : 8.76mA (no regulator: 7.3mA)  TIMER sleep(PM2): 28uA (no regulator: 1.15uA)  DEEP sleep(PM3): 30uA (no regulator: 0.34uA)  Peripheral  Accelerometer: 235uA  Led: 8mA  Buzzer: 39.6mA  Power check circuit: 0.5mA  Radio  RX on: 26mA  TX: 30mA

Proposed LIDx sequence

Proposed LIDx timing Beacon period : 100 ms RX waiting time : 200 ~ 400ms Active time : 2-TX + RX waiting time 고정노드 이동노드 비콘 Sleep 메시지 요청 Active Location (if changed) TXRXTX 비콘

Life-span estimation  Mode 1  RX 400ms, TX *2, 1 cycle - 10 sec  Avg. current : mA  Mode 2  RX 400ms, TX, 1 cycle – 120 sec  Avg. current : mA  Scenario  Mode1*14h + Mode2*10h -> Avg. current : mA  1468mAh

Life-span estimation  Mode 1  RX 200ms, TX *2, 1 cycle - 10 sec  Avg. current : mA  Mode 2  RX 200ms, TX, 1 cycle – 120 sec  Avg. current : mA  Scenario  Mode1*14h + Mode2*10h -> Avg. current : mA  775mAh

Life-span estimation  Mode 1  RX 400ms, TX *2, 1 cycle - 10 sec  Avg. current : mA  Mode 2  Deep sleep  Avg. current : 0.4uA  Scenario  Mode1*14h + Mode2*10h -> Avg. current : mA  1361mAh

Over the Air Download(OAD)  Z-Stack OAD (ZOAD)  Context  Boot code  Application code  Architecture

ZOAD (cont’)  Application code

ZOAD  Boot code

Progress & Further works  Progress  Stationary node CC2530 version  Power management test  Further works  Sequence update  Stationary node message buffer  (LIDx OAD)

Q&A