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