الأربعاء، 30 سبتمبر 2009

The mote Revolution


what do you need for implementatio?
Slide 21
rBoard size: 3.0” x 1.5”
rOne antenna for both transmit and receive
rTransmit & receive data packets from base station 
and the component mentioned in mica 2 message. you can make it and our gift some research centers.
Slide 15
r
  Slide 15
rUCLA Center for Embedded Networked
Sensing (CENS) http://www.cens.ucla.edu/.
rBerkeley Wireless Embedded Systems
r(WEBS).



الثلاثاء، 29 سبتمبر 2009

Mica2 mote


Slide 6
Slide 6
Slide 6
Slide 6

  •   3rd Generation, Tiny, Wireless 



  • Platform for Smart Sensors  Designed Specifically for Deeply



  • Embedded Sensor Networks  > 1 Year Battery Life on AA 



  • Batteries (Using Sleep Modes)   Wireless Communications with



  • Every Node as Router Capability  868/916 MHz Multi-Channel



  • Radio Transceiver  Expansion Connector for Light,



  • Temperature, RH, Barometric 



  • Pressure, Acceleration  3rd Generation, Tiny, Wireless
    Platform for Smart Sensors  Designed Specifically for Deeply
    Embedded Sensor Networks  > 1 Year Battery Life on AA
    Batteries (Using Sleep Modes)   Wireless Communications with
    Every Node as Router Capability  868/916 MHz Multi-Channel
    Radio Transceiver  Expansion Connector for Light,
    Temperature, RH, Barometric
    Pressure, Acceleration/Seismic,
    Acoustic, Magnetic and other
    Crossbow Sensor Boards






Sensor Network-Based Countersnipers


Slide 3
To locate snipers in urban environments.
Work with constraints of the urban environment
Multipath effects
Poor coverage due to shading effect of buildings
Limitations of existing systems
Require direct line of sight
Rely on muzzle flash that can be suppressed
Centralized system not tolerant to sensor failure
Cost effectiveness.

Slide 3
Slide 4
Use an ad-hoc wireless sensor network-based system
Utilize many cheap sensors for
good coverage of direct signal
tolerance to failures
Detect via acoustic signals like muzzle blasts and shockwaves

 



Wireless Revolution



Slide 10
qself configuring systems that adapt to unpredictable environment
vdynamic, messy (hard to model), environments preclude pre-configured behavior
v
qleverage data processing inside the network
vexploit computation near data to reduce communication
vcollaborative signal processing
vachieve desired global behavior with localized algorithms (distributed control)

qlong-lived, unattended, untethered, low duty cycle systems
venergy a central concern
vcommunication primary consumer of scarce energy resource


الاثنين، 28 سبتمبر 2009

An idea about wireless control and automation standrds


WirelessHART

WirelessHART is an open-standard wireless networking technology developed by HART Communication Foundation. The protocol utilizes a time synchronized, self-organizing, and self-healing mesh architecture. The protocol currently supports operation in the 2.4 GHz ISM Band using IEEE 802.15.4 standard radios.
Developed as a multi-vendor, interoperable wireless standard, WirelessHART was defined specifically for the requirements of Process field device networks. The standard was initiated in early 2004 and developed by 37 HART Communications Foundation (HCF) companies that included ABB, Endress+Hauser, Emerson, P+F, Siemens and others. The underlying wireless technology is based on the pioneering work of Dust Networks, and the company's TSMP technology is considered a foundational building block of the WirelessHART standard.
WirelessHART was approved by a vote of the 210 member general HCF membership, ratified by the HCF Board of Directors, and introduced to the market in September 2007.On September 27, 2007, the Fieldbus Foundation, Profibus Nutzerorganisation, and HCF announced a wireless cooperation team to develop a specification for a common interface to a wireless gateway, further protecting users' investments in technology and work practices for leveraging these industry-pervasive networks. Following its completed work on the WirelessHART standard in September 2007, the HCF offered ISA an unrestricted, royalty-free copyright license, allowing the ISA100 committee access to the WirelessHART standard.
Backward compatibility with the HART “user layer” allows transparent adaptation of HART compatible control systems and configuration tools to integrate new wireless networks and their devices, as well as continued use of proven configuration and system-integration work practices. Building on the estimated 25 million HART field devices currently installed, and approximately 3 million new wired HART devices shipping each year, end users are already embracing the industry’s first unifying wireless field device standard. In September 2008, Emerson became the first process automation supplier to begin production shipments for its WirelessHART enabled products.
(To learn more, go to http://www.hartcomm.org/ and view the white papers and articles on WirelessHART)

A sensor node, also known as a 'mote', is a node in a wireless sensor network that is capable of performing some processing, gathering sensory information and communicating with other connected nodes in the network. The typical architecture of the sensor node is shown in figure.

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Did you know about smart dust؟


Smartdust is a hypothetical wireless network of tiny microelectromechanical (MEMS) sensors, robots, or devices, that can detect (for example) light, temperature, or vibration.

Simply amassive number of sensing elements are deployed in an environment wich will give us an accurate data about thin environment.

كل عام وانتم بخير

بسم الله الرحمن الرحيم
(وقل اعملوا فسيرى الله عملكم ورسوله والمؤمنون وستردون الى عالم الغيب والشهادة فينبئكم بما كنتم تعملون)