Transcript Wireless Sensor Networking

The eyesIFX platform
Vlado Handziski
Technical University Berlin
Filling in for:
Thomas Lentsch
Infineon Technologies, AG
Feb. 2nd, 2005
TinyOS Technology Exchange II
Infineon’s eyesIFX Platform
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Developed by Infineon for the Energy-efficient selforganizing and collaborative wireless sensor
networks project – EYES
TI MSP430 microcontroller family
64 kbps 868MHz ASK/FSK Infineon Wireless
Transceiver TDA5250
HW UART based byte interface towards the radio
Integrated Temperature and Light sensors
Full TinyOS software support provided by TU Berlin
Feb. 2nd, 2005
TinyOS Technology Exchange II
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eyesIFXv2 Node Architecture
USB
JTAG
Interface
Antenna
RX-Data
RX
SAW Filter
TDA5250
TX-Data
Ptx
Control
TX
MSP430F1611
Sensor Interface
RSSI
Temperature Sensor
Power Supply
Feb. 2nd, 2005
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Serial Flash
Light Sensor
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The eyesIFXv2 Mote
Feb. 2nd, 2005
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TDA525x Block Diagram
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TDA525x - Feature List
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Technology 0.5µ 25GHz BiCMOS-Process
Frequency bands
315MHz (TDA5251)
433MHz (TDA5255)
868MHz (TDA5250)
915MHz (TDA5252) (from Q2/05)
Data rate
1..64 KBit/s
Deviation / Mod. index 10..150KHz / mH > 2
Sensitivity
ASK: < -110 dBm @ 50W, BER = 10-3
FSK: < -100 dBm @ 50W, BER = 10-3
Transmit power
Pout up to +13 dBm @ 50 W
Supply voltage
2.1..5.5V
Current consumption TX: typ. 10mA RX: typ. 8 mA @ 3V
Power down max. 100nA
Temperature range
-40°C / +85°C
Self-polling with fast data rate detection easing CSMA protocol implementation, onchip data and channel filters set via I²C or SPI bus
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eyesIFXv2 Deployments
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TU Berlin’s WSN Testbed
Testing WSN building automation applications in realistic
setting
About 50 instrumented rooms, more then 120 nodes spread
on four floors of the TKN office building
USB back channel allowing remote control and debugging
Feb. 2nd, 2005
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Summary
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Initially developed as research platform for the EYES project
Targets the low-power end of the WSN application spectra
Shows how the cost of the WSN platforms can be reduced by
reusing designs from related high volume markets
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TDA 5250 family originally developed for the “Remote key-less car
entry” application
Node design influenced by Infineon’s wireless tire pressure
measurement solutions
eyesIFXv2 motes (868MHz) commercially available in Q2/05,
after the end of the EYES project
Feb. 2nd, 2005
TinyOS Technology Exchange II
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