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EMBEDDED WEB TECHNOLOGY

By : SRUTHI R BABU

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INTRODUCTIONThe world we are living is becoming internet controlled day by day .

In this sense we should have some regarding embedded web technology(EWT)

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Introduction to EWT

Embedded web technology is defined as the marriage of embedded system and world wide web

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HISTORY EWT was developed by members of NASA Lewis Research Center

It was modified in 2002.

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EWT- BASICSEmbedded system

Embedded web server

Client server

HTML and XML 5EMBEDDED WEB TECHNOLOGY

Embedded systemAnembedded systemis a computersystem with a dedicated function within a larger mechanical or electricalsystem, often with real-time computing constraints

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Embedded web server Embedded Web Server Technology is most evolving technology for Internet Devices. There are many application areas including internet devices, telecommunication devices, measuring instruments and lots of consumer electronics7EMBEDDED WEB TECHNOLOGY

Client server modelClientA logical entity that initiates a request for data or for an action to take place.. ServerA complementary logical entity to a client.

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HTML and XMLHTMLHypertext markup language (HTML) is a language used to describe a webpage.When a web browser receives content that is HTML it will try to render the content into a web page. Similar to XML, HTML is made up of tags, but unlike XML, HTML defines what types of tags are acceptable.

XML Extensible markup language (XML) is a structure for text so that information can be easily stored and transmitted through a web service.Although the L in XML stands for language , but it is not a programming language. XML is a popular content choice because it is human readable, and translates easily to other programming languages.

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EWT-explanationTypical web server environment versus an embedded, real-time environment

World wide web Embedded systems on the web

Tempest

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EXAMPLEREQUESTGET /index.html HTTP/1.0 Connection: Keep-Alive User-Agent: Mozilla/4.7 [en] (WinNT; U) Host: jgp6290.grc.nasa.gov Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */* Accept-Encoding: gzip Accept-Language: en Accept-Charset: iso-8859-1,*,utf-8

RESPONSEHTTP/1.1 200 OK Host: jgp6290/139.88.219.70 Date: Mon, 020 Aug 2001 17:27:31 GMT Server: TempestJava 1.2 (NASA/GRC Java Version of Tempest) Connection: Close Content-Length: 293 293 Content-Type: text/html

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WORKING OF EWT

The embedded Web system works on the same principle as that traditional Web request-response systems. 12EMBEDDED WEB TECHNOLOGY

Web pages from the embedded system (server) are transmitted to the Web browser (client) , which implements the user interface (Presentation layer).

Web-enabled devices use theHTTP (Hyper Text Transfer Protocol)standard protocol to transmit Web pages from the embedded system to the Web browser , and to transmit HTML (Hyper Text Markup Languages) form the data from the browser back to the device.

The HTTP protocol engine takes the request from the Web browser and sends it on the TCP/IP. The HTTP protocol Engine parses the request and sends it to the embedded application for processing.

After producing the results , the embedded application generates the HTML code and feeds it to the HTTP Engine , which sends it back to the client using TCP/IP.13EMBEDDED WEB TECHNOLOGY

ADVANTAGES

Utilizing Embedded Web Technology has several advantages

Web browser does not store the applet permanently

. User interface software upgrades

Provide output to the remote user in any format

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APPLICATIONS OF EWTTraffic monitoring

Video monitoring

Power infrastructure monitoring15EMBEDDED WEB TECHNOLOGY

Web technology in embedded applications has distinct advantages over legacy and custom communication mechanisms due to the scalability and security. The amount of knowledge and skills needed to create a web application may be large. However embedded technology is vastly becoming an important tool in our daily lives

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[1] Embedded Web Technology: Applying World Wide Web Standards to Embedded Systems- Joseph G. Ponyik and David W. York Glenn Research Center, Cleveland, Ohio; NASA/TM2002-211199/March 2002/AIAA20015107

[2] Embedded web technology in traffic monitoring system, International Journal of Innovative Research in Advanced Engineering (IJIRAE) Volume 1 Issue 4 (May 2014 ISSN: 2349-2163 ) http://ijirae.com [3] Application Research of Embedded Web Technology in Traffic Monitoring System Proceedings of the Second Symposium International Computer Science and Computational Technology(ISCSCT 09) Huangshan, P. R. China, 26-28,Dec. 2009, pp. 094-097

[4] Dustdar, S.; Schreiner, W. (2005). "A survey on web services. composition".International Journal of Web and Grid Services: Doi:10.1504/IJWGS.2005.007545

[5] Power infrastructure monitoring system on Embedded Web International Journal of Science and Engineering Volume 1, Number 2 - 2013 PP-71-76 IJSE

REFERENCE17EMBEDDED WEB TECHNOLOGY

THANK YOU..18EMBEDDED WEB TECHNOLOGY