Ldb mapperò di prinzio 04
- 1. NODUS MODULARIS project An Overview Fabrizio Stefani Fernando Pianegiani nome.cognome@arslogica.it
- 2. 2 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t SUMMARY Wireless Sensor Networks and Motes WSN Topology Berkeley Mote Mica2 Mote Platform Evolution 802.15.4 Platforms: Telos and MicaZ 802.15.4 and ZigBee, why? MoteBoard for development: ALmote The Concept of Modular Node The Modular Node Prototype Modular Node Applications (ex.)
- 3. Wireless Sensor Networks and Motes Wireless sensor network (WSN): a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions (e.g. temperature, sound, vibration, pressure, motion or pollutants) at different locations. A Mote is “a small piece of something”, such as a dust particle. Mote is the name usually given to WSN boards (mote boards, MB). Memory Exp Connector MCU 3 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t Mote components: Microcontroller (MCU) Radio Chip Antenna Power source (e.g. battery) External Memory Sensors (S) Expansion Connector Mote Radio Chip S S Power (battery)
- 4. WSN topology (general) 4 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t Base station Gateway Cluster-head Information system Motes Internet Cluster
- 5. Implementation problems: fixed-point implementation limited memory low clock frequency 5 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t Berkeley mote Mica2 Main characteristics: Size 58 x 32 x 7 (mm), 18 gr (+ batt.) Processor microcontroller Atmel ATmega128L 10 bit ADC 8 mA (ACTIVE MODE), < 15 μA (SLEEP MODE) Memory 4 Kbytes di SRAM 4 Kbytes di EEPROM 128 Kbytes di PROGRAM MEMORY 512 Kbytes di FLASH (SPI) Radio (ChipCon CC1000) > 25 mA TX, 8 mA RX, < 1 μA SLEEP 433 MHz (FSK), 19.2 Kbit/s, 330 m 3 LEDs • 51 pin expansion connector 2 batteries AA 1.5 V TinyOS Sensor board MPR410CB
- 6. Mote platforms evolution 6 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t
- 7. 802.15.4 platforms: Telos and MicaZ 7 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t Focused on low power Sleep - Most of the time Telos: 2.4mA MicaZ: 30mA Wakeup As quickly as possible to process and return to sleep Telos: 290ns typical, 6ms max MicaZ: 60ms max internal oscillator, 4ms external Process Get your work done and get back to sleep Telos: 4MHz 16-bit MicaZ: 8MHz 8-bit TI MSP430 Ultra low power 1.6mA sleep 460mA active 1.8V operation Standards Based IEEE 802.15.4, USB (Telos) IEEE 802.15.4 CC2420 radio 250 kb/s 2.4GHz ISM band TinyOS support New suite of radio stacks Pushing hardware abstraction Must conform to std link Ease of development and Test Program over USB (Telos) or simple programmer board (MicaZ) Std connector header Interoperability Telos / MicaZ / ChipCon dev UCB Telos Xbow MicaZ
- 8. MoteBoard for development: ALMote Key Features • 250 kb/s 2.4 GHz IEEE 802.15.4 Chipcon Wireless Transceiver • Interoperability with other IEEE 802.15.4 devices (Telos, MicaZ) • 8MHz Texas Instruments MSP430 microcontroller (10k RAM, 48k Flash) • Integrated ADC, DAC, Supply Voltage Supervisor, and DMA Controller • Integrated onboard antenna with 50 m range indoor / 125 m range outdoor • Ultra low current consumption • Fast wakeup from sleep (< 6 μs ) • Hardware link-layer encryption and authentication • JTAG and 24-pin expansion connector, optional SMA antenna connector • TinyOS support : mesh networking and communication implementation 8 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t ALMote = ArsLogica mote (Telos compatible)
- 9. Why 802.15.4 – ZigBee ? Certified Reliable and self healing (interference) Supports large number of nodes (up to 65535) Easy to deploy Very long battery life (days/months, depending on appl.) Secure Low cost Can be used globally (ISM band) 9 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t
- 10. The Concept of Modular Node Gateway Board (GB) Progr./Acquisition Board (PAB) Processing Board (EB) 10 ARSLOGICA srl Mote Board (MB) Transmission Board (TB) Controlling Board (CB) Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t Sensing Board (SB) • WiFi • GSM/GPRS • Bluetooth • ... • FPGA/DSP/GPP • Memory • OS (if needed) • MCU • Memory • OS + appl. SW • RS-232/422 • USB • Ethernet • JTAG • RF transceiver • Antenna (printed / external) Acceleration, Temperature Humidity, Light, Images ... Power Board (SB) Energy scavenging: • Solar panel • Vibration • Radiation, ...
- 11. Modular Node Applications (examples) ALMote ALMote PAB UART1 SPI UART1 UART 11 ARSLOGICA srl Via Trento, 117 - 38017 Mezzolombardo (TN), Italy - Tel. +39 0461 600253 Fax. +39 0461 603250 Email: info@arslogica.it w w w . a r s l o g i c a . i t GB (GPRS/WiFi) CB (MSP430) TB (CC2420) UART1 SPI (UART0) ALMote (SPI) PAB GB (GPRS/WiFi) (UART0) CB (MSP430) TB (CC2420) ALMote – Gateway ALMote – PAB ALMote – Gateway – PAB
Editor's Notes
- #2: NODUS MODULARIS Network Optimized Distributed Universal Sensing Modular Optimum Design Using Low-power Adaptive Radio Interconnected Systems