![Page 1: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/1.jpg)
MICA: A Wireless Platform for Deeply Embedded Networks
By Jason L. Hill, David E. Culler
Presented By Charuka Silva
![Page 2: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/2.jpg)
Application Possibilities for Miniature Wireless Sensing
Devices• Road side traffic pattern and open parking
spot detection
• Individual plant monitoring for precession agriculture
• Advanced building security and automation
• To gauge the structural integrity of building and bridge after earthquakes and fires
![Page 3: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/3.jpg)
Low Power Peer to Peer Ad-hoc Networks
• Local communication and application specific protocol drastically reduce size , cost and power use
• Peer-to-peer networking techniques provide flexible mesh like interconnect, which shuttles data between thousands of tiny embedded devices
![Page 4: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/4.jpg)
Ad-hoc Wireless Embedded Network For Precession
Agriculture
![Page 5: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/5.jpg)
Contd..• Sensors detect
– Temperature– Light Levels– Soil Measure at hundreds of points accrossed
the field
• New algorithms for data aggregation, ad-hoc routing and distributed signal processing for low power peer to peer ad-hoc networks
![Page 6: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/6.jpg)
MICA Wireless Platform
• Measures 1.25 X 2.25 inches• Runs TinyOS operating system• Suited for self configuring multihop wireless
networks• Has sensing, communication and I/O capabilities• Simultaneously act as a data router, sensor
interface and control point.
![Page 7: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/7.jpg)
Contd…• To explore novel systems approaches,
researchers can develop customized protocols tailored to their application; Mica does not require use of predefined protocols.
• provides a set of richly interconnected primitives (such as data serializers and timing extractors) to facilitate cross-layer optimizations.
![Page 8: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/8.jpg)
Contd..
• Design of power and time efficient primitives improve key system capabilities including low power device startup, time synchronization, power aware routing and localization.
• The standby current for MICA’s components is few microamps; can run application several years on one battery.
![Page 9: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/9.jpg)
Contd..
• Expansion bus connects to wide array of sensors improving experimental flexibility.
• Batch of sensor board include support for monitoring thermal temperature, barometric pressure, magnetic fields, light, passive infrared frequency, acceleration, vibration and acoustics
![Page 10: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/10.jpg)
MICA Node
![Page 11: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/11.jpg)
Wireless Design Comparison For Deeply Embedded Systems
1. Power consumption must be drastically reduced.
– Power consumption must average in the microamps range, requiring powering down most of the device much of the time
2. Many deeply embedded systems cannot rely on a predeployed, powerful infrastructure for support.
![Page 12: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/12.jpg)
Contd..– In a peer-to-peer multihop network, typically,
only the last hop communicate with the base station
– most of the nodes would be located outside of the station’s direct communication range.
• Most wireless devices carry out a single, highly standardized function.– deeply embedded networks must be
suited to a wide variety of applications; requires a more general-purpose system design.
![Page 13: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/13.jpg)
MICA Block Diagram
![Page 14: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/14.jpg)
MICA Architecture Overview
• Consists of five major modules– Processing– Power Management– I/O Expansion– Secondary Storage
![Page 15: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/15.jpg)
• Processor– The main microcontroller is Atmega 103L
– Normally programmed at manufacturing time, but MICA enables dynamic re-programming during routine use.
– Coprocessor handles wireless reprogramming.
• MICA Radio Module– RF Monolithics TR1000 transceiver and set of discrete
components
– Software can externally set the transmission radius ranging from inches to hundred feets
– Radio interface give direct control over the transmitted signal,allowing the modulation scheme, coding, framing and MAC protocol to be determined in software
![Page 16: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/16.jpg)
• I/O Expansion– Use to interface variety of sensing and
programming boards.– Expansion connector can program and connect
to other devices. Eg. PC as a gateway– Can control or provide data to any RS-232
protocol based device.
• Power Management– Regulate system’s supply voltage– Operates with inexpensive alkaline batteries
![Page 17: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/17.jpg)
• Storage– 4Mbit Atmel AT45DB041B serial flash is used– Stores sensor data logs and temporarily holds
program images received over the network interface.
![Page 18: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/18.jpg)
Today’s MICA
• Many research groups in the US that are exploring deeply embedded sensor networking use MICA node as a foundation for their researches
• A single-chip version of the architecture is in development. It will generalize MICA architecture, provide additional accelerator and drastically reduce standby power consumption.
![Page 19: MICA: A Wireless Platform for Deeply Embedded Networks By Jason L. Hill, David E. Culler Presented By Charuka Silva](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e195503460f94b06466/html5/thumbnails/19.jpg)
Thank you