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SAND - Small Autonomous Network Devices
 

SAND - Small Autonomous Network Devices

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    SAND - Small Autonomous Network Devices SAND - Small Autonomous Network Devices Presentation Transcript

    • Miniature wireless sensor devicesMartin Ouwerkerk - ResearchHealthcare Devices & Instrumentation / Storage Signal ProcessingSmall Autonomous Network Devices11/10/2005
    • Small Autonomous Network Devices OPUS2002-298 Offering: - A generic platform for unnoticeable unobtrusive sensing with reconfigurable modular miniature wireless sensor devices - Energy scavenging together with ultra low power technologies enable long to infinite operation times - Roadmap to truly small devicesHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 3
    • cap Exploded view SAND package SAND modules battery battery compartmentHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 15
    • Features • Lego like snap-on building blocks • Easily reconfigurable • Outside of building blocks forms hermetic package • Li battery in bottom module • PV module on top • Antenna printed on outside of PCBHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 confidential 11
    • Stackable module carrier rings: SAND packageHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 confidential 12
    • Available modules for SAND power converter Zigbee transceiver 3D accelerometer CC2500 transceiver 1 Mbit flash empty module carrier ringHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 confidential 14
    • All modules ready to form a stack together with caps, batteryHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005
    • High end, niche Application evolution Dedicated, autonomous Medical, oil drilling, space, top sport Sport, healthcare, TPM Smart Dust, autonomous Application Development Fitness, ambient Intelligence, distributed, emotion assessment, fatigue Optimized application oriented SAND nodes 3D integrated micro-SAND nodes 6 x 14 mm O 3 x 8 mm O 0.5 x 7 mm O Size 2005 2006 2007 2008 2009 2010 2011Health care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 17
    • End-user consortium The first generation SAND platform will serve an end-user consortium of about 15 members. -a limited number of large parties, such as Homelab, WUR, WASP, Aquisgrain -a larger number of specific application driven users, such as ILSA, MyHeart, Implantables, Lighting controlls, VIBES, …Health care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005
    • Crossbow Mica2Dot 10000 Phii lps 1000 C rossbow 100 Intel 3mm 10 1 0.1 2000 2005 year 2010 2015 PhilipsHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 18
    • Modules in preparation(when available)Microprocessor CoolfluxDSP (Q4/05) PCH7970(Q4/05)Energy scavenging PV (Q4/06) Vibration (Q4/06)Battery Li button primary(now) Lithilene rechargeable (Q4/05) 3-D accelerometer Electric field Magnetic (now) sensor(now) sensor(Q4/05)Sensors CMOS camera Temperature Humidity (Q4/05) (Q4/05) (Q1/06)Wireless ULP radio(Q4/05) Zigbee/802.15.4 (now) Health care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 19
    • CoolFlux DSP architecture flow JTAG interupt• Full 24/56 bit datapath debug module control program memory handler instruction unit (CF6-24) fetch unit halt run data address logic instruction pipeline• 2 24x24 bit multipliers generator X interlock and loop control unit logic instruction decoders• 2 56 bit ALUs data address generator Y data• 56 bit accumulators register files processing unit addresses• 16 and 20 bit datapaths 0 source and result busses 1 can also easily be generated m external M0• JTAG debug interface I/O space external DMA bus arbiters data• I2C interface access P external DMA bus control unit 0 1 M1• UART interface access X, Y n ALU0• SPI interface write back buffers X Y ALU1 data memory control ALU2 X Y busses Health care Devices & Instrumentation / Source: Philips Applied Technologies Leuven Storage Signal Processing Martin Health care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 Ouwerkerk 21/04/2005 20
    • Optimisation of power consumption according to the various relevant parameters: voltage, capacitor, switching activity. •Voltage –Comparison 0.7Volt & 0.9Volt technology (for the core) –Available memory technologies at 0.9Volt •Capacitor Technology comparison between CMOS 180, 130 & 90 nm including process options •Switching activity –Clock distribution and clock gating (micro clock gating for DSP core and macro clock gating for peripherals) –Memory power switching Health care Devices & Instrumentation / Source: Philips Applied Technologies Leuven Storage Signal Processing MartinHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 Ouwerkerk 21/04/2005 26
    • 1G 10pJ/instr 100pJ/instr 100M 1000pJ/instrMicrocontroller 10Mcomparison 1M Coolflux IPS MSP430 Atmel AT89LP 100k LPC3000 PCH7970 10k HTC80C51 XemicsXE88LCO EM6607 1k 1µ 10µ 100µ 1m 10m 100m 1 WattHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005
    • 1M Power Consumption in Idle modeMicrocontroller 100k Coolflux MSP430comparison PCH970 EM6607 AtmelAt89LP Memory [Bytes] 10k 1k 100 10 1µ 10µ 100µ 1m 10m WattHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005
    • CoolfluxDSP compared for various technologies 640 μW @ 10 MHz, 8instr/cycle 8 pJ/instruction CMOS 90 nm CMOS 130 nm CMOS 180 nm Core Area (mm2) 0.23 0.43 0.65 Memory area (mm2) 3.34 6.8 16 Leakage (μW) 14 170 4 Power consumption 640 1000 1300 at 10 MHz (μW) Source: Philips Applied Technologies LeuvenHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 27
    • The PCBs are put on the rings, which themselves Transceiver PCB are put on top of each other being connected via a “bus” of connectors (which I think could act as a groundplane) End of antenna The antenna is printed on the outside of the connnectors (see left photograph) On the lower right corner you can see an artist impression of how the final system should look like. From this picture you can see that the antenna strip is around the connector bus (probably the groundplane). Depending on the position of the ring with the transceiver PCB (and the antenna) the connectors stick below, above or both. Start of antenna holes for the connectors 24 connectors (conductors) form a bus through the system,Health care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 Artist impression 1
    • Wireless optionsBluetooth Ph. Semiconductors BGB203 8 x 7 x 1.3 mm 33 mA @ 2.65 .. 3.4 V 2.4 GHzZigbee Chipcon CC2420 7 x 7 x 0.85 mm 19.7 mA @ 2.1 .. 3.6 V 2.4GHzZigbee Ember EM2420 7 x 7 x 0.85 mm 19.7 mA @ 2.1 .. 3.6 V 2.4GHzULP wireless PRL Redhill < 1cm2 1 mW 0.868GHzHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 43
    • Photovoltaic energy scavenging: indoor light 24V 6.7A halogen lamp 10.0000 indoor 1.0000 Max_P_mW/cm2 poly_big 0.1000 Si Eno GaAs 0.0100 AM_1 AM_2 poly_small 0.0010 0.0001 100 1000 10000 100000 LuxHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 30
    • Photovoltaic energy scavenging: indoor light 0.1..1 mW out of 1.3 cm2 when using single crystalline Si Conversion to 4.2V battery charging voltage at 70% efficiency 70-700 μW average power to device Autonomous operation only with a duty cycleHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 31
    • Duty cycled operation 200 μW average power budget available: Processing at 640 μW: 10%………….... 64μW Transmission at 50 mW: 0.1%….……... 50μW Leakage and self discharge:89.9%……. 36μWHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 32
    • Energy storage Lithylene battery: rechargeable Li-polymer Size: 13 mm diameter by 1.5 mm height (0.2 cm3) Capacity: 22 mAh at 3.6V (285 J) @ 200μW means 400 hours Primary Li Battery: CR1225: 48 mAh at 3V @ 200μW means 1 monthHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 33
    • Sensors: 3-D accelerometer 13 mm Kionix KXM52-1050 TriaxisXYZ +/- 2g range 1.5mA at 3V 0-1500Hz 5 x 5 x 1.8 mm MAX1239 2-bit ADC Other options: Bosch Triax SMB360 Oki ML8950Health care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 35
    • Sensors: 3-D accelerometer Kionix KXM52-1050 TriaxisXYZHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 35
    • Sensors: 3-D accelerometer Kionix KXM52-1050 TriaxisXYZ Requirement Kionix Capability Small package size 5x5x1.8mm Low noise 35-65 µg/RtHz Vdd 2.5-5.5V Idd@3V 1.5mA Power management <10 µA Start up time <2 mSec High shock tolerance >4600g Operating -40 to +125C temperature Configurations Single, dual or tri- axisHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 35
    • Sensors: Electric field sensor ECG measurement through the clothingHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 36
    • Schematics electric field sensor 229_2970.jpgHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 37
    • Sense Chair True unnoticeable HRV monitoringarray of 8 contactless ECG sensors built into this chair Picture from MontisHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 40
    • Electronic textiles/CONTEXT (together with TNO) Conductive patches woven into cloth Possibility of shielding layers Conductive lines lead to multiplexer Optimal combination is connected to amplifiers/filters Status LEDs can be incorporatedHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 41
    • ECG analysis: Heart Rate Variability Cepstrum to quantify level of short-term periodicity Changes in the cepstrum signal may be linked to emotional and/or awareness changesHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 42
    • Epilepsy attack warning system EEG Capacitative probes 3-D accelerometers torso Coolflux DSP wrists Mobile phone transceiver internet headHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 53
    • Epilepsy attack warning system EEG Capacitative probes 3-D accelerometers torso Coolflux DSP wrists Mobile phone transceiver internet headHealth care Devices & Instrumentation / Storage Signal Processing Martin Ouwerkerk 11/10/2005 53