Tag Mobile Node Power Consumption RTlab Moo Jin Kang 2009.01.22 1.

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Presentation transcript:

Tag Mobile Node Power Consumption RTlab Moo Jin Kang

Contents  Tag Mobile Node Construction  H/W Composition  AAAA Battery Feature  Tag Node Power Consumption Test 2

Tag Mobile Node Construction 8Bit MCU IEEE RF Transceiver 외부 안테나 움직임 감지 센서 사용자 입출력 단자 배터리 3

H/W Composition  CC2430 (128k Flash, 8k Ram) _1EA  TILT SWITCH( TS3) _3EA  LED _1EA.  Buzzer (GEC09B-3(3V)) _1EA  Battery (AAAA, 1.5V, 600mAh) _2EA 4

AAAA_Battery Specifications 5  ENERGIZER E96  Classification: Alkaline  Designation: ANSI-25A, IEC-LR8D425  Nominal Voltage: 1.5 volts  Nominal IR: 150 to 300 milliohms (fresh)*  Operating Temp: -18°C to 55°C (0°F to 130°F)  Typical Weight: 6.5 grams (0.2 oz.)  Typical Volume: 2.2 cubic centimeters (0.1 cubic inch)  Shelf Life: 5 years at 21°C (80% of initial capacity)

AAAA Battery Feature 6 Shelf Life: 5 years at 21°C (80% of initial capacity) One 1.5V battery uses a 90% effective (600mAh * 0.8(Shelf Life) * 0.9(a 90% effective)) = 432mAh

Power Consumption of H/W Parts(spec) 7 ACTIVESLEEP CC mA(MCU Active Mode) 26.7mA(MCU Active and RX Mode) 26.9mA(MCU Active and TX Mode, 0dBm) PM1 : 190uA PM2 : 0.5uA PM3 : 0.3uA TILT SWITCH-- LED20mA- Buzzer (GEC09B-3(3V))80mA(Max. Current Consumption) - MAX126.9mA 0.3uA + K (PM3) Power mode 1 : Digital regulator on, 16 MHz RCOSC and 32 MHz crystal oscillator off kHz XOSC, POR and ST active. RAM retention. Power mode 2 : Digital regulator off, 16 MHz RCOSC and 32 MHz crystal oscillator off kHz XOSC, POR and ST active. RAM retention. Power mode 3 : No clocks. RAM retention. POR active.

PM2/3 mode Power Consumption Test Bed 8 Power Supply Tag Mobile Node Digital Multimeter VCC(3.3V) GND

PM2 mode Power Consumption Test 9  PM2  Prochild Module(PC )  Input : 3.3V DC  AVG : 2.5uA

 PM3  Prochild Module(PC )  Input : 3.3V DC  AVG : 2.0uA PM3 mode Power Consumption Test 10

Polling Power Consumption Test Bed 11 Power Supply Tag Mobile Node Oscilloscope Resistor 10ohm

Power consumption during a Polling 12 CDMA /CA RX TX Power Mode2 Power Consumption 2ms 20mA

Power consumption during a Polling Test 13  MCU Active : 20mA  RX Mode : 40mA  TX Mode : 60mA  Operation Time : 12ms  At a time Power Consumption : 0.50mA

Life Time of Tag Mobile Node(Fix) 14  Battery Capacity : 430mAh  Polling Cycle : 1~120s  PM2 Power Consumption : 2.5uA  At a time Power Consumption : 500uA

Life Time Example 15  Battery Capacity : AAAA Battery * 2 (430mAh)  Tag Mobile Node Life Time  Polling Cycle : 30s  PM2 Power Consumption : 2.5uA  At a time Power Consumption : 500uA  Life Time2.6year(Cycle 30s) Polling Cycle(s)Life Time(year) 10s s s s s

Life Time of Tag Mobile Node(Mobile) 16  Battery Capacity : 430mAh  MCU Active : 20mA  Rx Active : 40mA  Tx Active : 60mA  Buzzer : 80mA  LED : 20mA  Polling Cycle : 30s

Q&A 17