NETWORKS OF WIRELESS SENSORS

INDEX:1. INTRODUCTION2. OBJETIVES3. NETWORKS OF WIRELESS SENSORS4. GENERAL VISION5. POTENCIAL APPLICATIONS6. ARCHITECTURE OF SYSTEM WSN: 7. COMPONENTS OF A NODE WSN:8. CONCLUTIONS9. BIBLIOGRAPHY

INTRODUCTIONThe creation of smart environments, created from simple devices

incorporating the objects around us, is the goal of ubiquitous computing. Within this field include Wireless Sensor Networks WSN or (Wireless Sensor Networks).

• These networks consist of hundreds or thousands of small nodes intelligent but simple and very low cost, forming an autonomous network that is where they themselves self-organize and manage and, in turn, collaborate and cooperate to measure a physical parameter the environment.

This article presents the characteristics of these networks, their potential uses and accused design constraints that make the challenges are great research interest.

OBJECTIVES Implement a database with the information provided by nicknames that are

taking a census.

Create a PHP based program to transfer the information from the database to the Internet.

Make a Web interface that allows a user to access to both the state of the sensors in real time, as information collected and stored by the nicknamesTelosB.

Evaluate the effective functioning of both the interface real-time information and the database.MONITORING.

NETWORKS OF WIRELESS SENSORS

These are minicomputers oriented to a task specific, easy to install and able to realize processes in very just a short time.

GENERAL VISION:

A network of wireless sensors (WSN) is a network that consists of distributed devices spaced and independent using sensorial to monitor physical training conditions or environmental. A system WSN incorporates gateway that provides wireless connectivity with return to the world of cables and distributed nodes (it sees Figure 1). The wireless protocol that is selected depends in the requirements of the application. Some of the standards available include 2, 4 radios of GHz based on the standards 802.15.4 IEEE or IEEE 802, 11 (Wi-Fi) or proprietary radios, which are regularly of 900 MHz.

Components of WSN Distributed Gateway and Nodes

POTENTIAL APPLICATIONS: Their fields of application are in different areas including

the care of the basic health, services and remote monitoring. In the health case, the wireless devices make the monitoring to the patients less invasive and to do possible the care of the health of efficient way. For basic services like electricity, public lighting system and water city councils, the wireless sensors offer a method of low cost for a system of healthful data collection that helps to reduce to the use of energy and better handling of resources.

POTENTIAL APPLICATIONS: The remote monitoring covers an ample rank with

applications where the wireless systems can complement cable systems reducing wiring costs and allowing new types of applications of measurement. The applications of remote monitoring include:

Environmental monitoring of air, water and groundStructural monitoring for buildings and bridgesIndustrial monitoring of machinesMonitoring of processes Pursuit of assets

ARCHITECTURE OF SYSTEM WSN:

The system architecture WSN combines wire and wirelessThe wireless technology offers

several advantages for those who they require to construct to systems wireless wirings and are useful the best technology for his application. An architecture flexible software like NOR Lab VIEW, a graphical platform of design of systems is important. Lab VIEW offers the required flexibility to connect an ample rank of wireless devices with cable and. (look at Figure 2).

The wireless technology offers several advantages for those who require to construct to systems wireless wirings and are useful the best technology for his application. An architecture flexible software like NOR Lab VIEW, a graphical platform of design of systems is needed. Lab VIEW offers the required flexibility to connect an ample rank of wireless devices with cable. (Look at Figure 3).

(Look at Figure 3).

COMPONENTS OF A NODE WSN:A node WSN contains some technical components.

These include the radius, battery, microcontroller, analogical circuit and an interface to sensor. When you use technology of radio WSN, you must make compensations important. In systems fed with battery, discharges rates of data and frequent use of radio consume major energy. Often, it is a requirement three years of life of a battery, so nowadays many of systems WSN are based on Zig Bee due to the low consumption of power; because the technology of life of the battery and handling of power are in constant development and due to the bandwidth IEEE 802,11 available, Wi-Fi is an interesting technology.

Components of a sensor of node WSN

CONCLUSIONSWireless networks can be very boom in our country due to the need for

movement is required in the industry, this technology can be used in conjunction with optical scanners in the area of footwear in our town, to control the production of footwear, to determine exactly where there have been delays and thus able to attack immediately and do not stop production.

Optical technology can be considered to be the most practical and easy to implement because for radio technology must order licenses for use of space to the SCT or you can break the law with respect to this the SCT must have a lot of work because in big cities like Mexico City, where space is very saturated radio frequencies am radio, fm, business communication, and so on.,. We must be careful if you want to buy the hardware for a wireless radio technology, because we must be sure and have the approval of the SCT

BIBLIOGRAPHYhttp://

html.rincondelvago.com/redes-inalambricas_1.html

http://www.euroresidentes.com/futuro/avances_previsibles.htm

http://library.abb.com/GLOBAL/SCOT/scot271.nsf/VerityDisplay/A019E9833DCF2819C1257199004E5DD2/$File/39-42%202M631_SPA72dpi.pdf