Location Sensing Technologies

8/14/2019 Location Sensing Technologies

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LocationSensing technologie


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ocation-Based Services

A location-based service (LBS) is an information and entertainment service, accessible with mobile devicesthrough the mobile network and utilizing the ability to make use of the geographical position of the mobiledevice.

Woices (World voices)

http://woices.com ( Location Base media )


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Push and Pull technology

Push technology orserver push, describes a style of Internet-based communication where the request for

a given transaction is initiatedby the publisher or central server.

Pull technology, where the request for the transmission of information is initiated by the receiver or client.
http://www.funkykaraoke.com/wp-content/uploads/2009/06/client-server-basics-opt.png


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locative media concentrates on social interaction with a place and with technology.Many locative media projects have a social, critical or personal (memory) background.Locative media projects use technology such as Global Positioning System (GPS), laptop computers,the mobile phone, Geographic Information System (GIS), Google Maps.

Locative Media

http://socialight.com


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http://stoneblog.stonesoft.com/2009/07/smc-videos-geolocations/http://www.youtube.com/watch?v=F9lE_M6qvrY
http://stoneblog.stonesoft.com/2009/07/smc-videos-geolocations/http://www.youtube.com/watch?v=F9lE_M6qvrYhttp://www.youtube.com/watch?v=F9lE_M6qvrYhttp://stoneblog.stonesoft.com/2009/07/smc-videos-geolocations/


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Geotaggingis the process of adding geographical identification metadata to various media such asphotographs, video, websites.These data usually consist of latitude, and longitudecoordinates, though they can also include altitude, bearing, accuracy data, and placenames.


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Locative Art

http://www.youtube.com/watch?v=zWBvRAWx8ZIhttp://www.gpsdrawing.com ( GPS Drawing )
http://www.gpsdrawing.com/projects/dmlogo.html


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http://www.youtube.com/watch?v=UweM9XFhqT4
http://www.youtube.com/watch?v=UweM9XFhqT4http://www.youtube.com/watch?v=UweM9XFhqT4


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The Global Pet Finder GPS Pet Tracker

Yes, GPS systems are no longer just for men!

RoamEO

$350.00

$400.00!


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EXAMPLE OF USING NAVIGATIONAL TECHNIQUES

Mscape is a mobile media gaming platform under development by HewlettPackard

that can be used to create location-based games.

http://www.youtube.com/watch?v=BUOHfVXkUaI

1.Download the mscape software to your Windows PC.2.Connect your mobile device to your PC and use the mscape library to copy the player and the startermediascape onto it.3.Start the mscape player and load the starter mediascape.4.Go outside and play! You will need a clear view of the sky so your device can get a stablee GPS location fix.

http://www.mscapers.com/
http://www.youtube.com/watch?v=BUOHfVXkUaIhttp://www.mscapers.com/http://www.mscapers.com/http://www.youtube.com/watch?v=BUOHfVXkUaI


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FID tags contains two parts :

1) Integrated circuit

For storing and processing information, modulating anddemodulating a radio-frequency (RF) signal.

2)Antenna

For receiving and transmitting the signal.


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RFID Readers


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There are three types of tags:

1)Active RFID tags:

Contain a battery and can transmit signals autonomously.

2) Passive RFID tags:

No Battery and require an external source

to provoke signal transmission.

3) Battery assisted passive (BAP) :

Which require an external source to wake up but havesignificant higher forward link capability provokinggreat read range. .
http://www.emeraldinsight.com/fig/0870290206011.png


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Race Timing

IT Asset Tracking

Passports

Biometric passport

Mobile payment

Transportation payments

RFID and asset management

Product tracking

Transportation and logistics

Lap scoring

Animal identification

Inventory systems

Promotion trackingLibraries

Schools and universities

Museums

Current uses of RFID

http://www.youtube.com/watch?v=eob532iEpqk&feature=related

http://www.youtube.com/watch?v=ATAdk4X4FPA&feature=related
http://upload.wikimedia.org/wikipedia/commons/9/99/RFID_hand_1.jpghttp://upload.wikimedia.org/wikipedia/commons/8/80/FasTrak_transponder.jpg


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Navigation:

Navigation is the process of reading, and controlling the movement of a craftor vehicle from one place to another.

Most modern navigation relies primarily on positions determined electronically byreceivers collecting information from satellites.

Modern navigation methods:

1. Sensor navigating

--Dead reckoning (DR) is the process of estimating one's current position based upona previously determined position. The system uses a computer motion sensors(accelerometers) and rotation sensors (gyroscopes) ) which are very widely used.

http://oceancolor.gsfc.nasa.gov/SeaWiFS/TEACHERS/NAVIGATION/

http://en.wikipedia.org/wiki/Dead_reckoning

http://en.wikipedia.org/wiki/Radar_navigation
http://oceancolor.gsfc.nasa.gov/SeaWiFS/TEACHERS/NAVIGATION/http://en.wikipedia.org/wiki/Dead_reckoninghttp://en.wikipedia.org/wiki/Radar_navigationhttp://en.wikipedia.org/wiki/Radar_navigationhttp://en.wikipedia.org/wiki/Dead_reckoninghttp://oceancolor.gsfc.nasa.gov/SeaWiFS/TEACHERS/NAVIGATION/


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2.Electronic navigation

-- Radio navigation is the application of radio frequencies to determining a position on the Earth.

Example: Real time Locating Systems.

--Radar navigation.(Radaris an object detection system that uses electromagnetic waves toidentify the range, altitude, direction, or speed of both moving and fixed objects).

3. Satellite navigation

Global Navigation Satellite Systems (GNSS) is the standard generic term forsatellite navigation systems that provide autonomous geo-spatial positioning withglobal coverage.

Example: Global Positioning System (GPS).


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How do satellites transmit the information to the user?

Satellite Based Augmentation System (SBAS)

Ground-based Regional Augmentation System (GRAS)

http://www.facebook.com/video/video.php?v=1168764391786

/en.wikipedia.org/wiki/Satellite_Based_Augmentation_System#Satellite_Based_Augmentation_System

http://www.nws.ei.tum.de/research/index_html
http://en.wikipedia.org/wiki/Satellite_Based_Augmentation_Systemhttp://www.nws.ei.tum.de/research/index_htmlhttp://www.nws.ei.tum.de/research/index_htmlhttp://www.nws.ei.tum.de/research/index_htmlhttp://en.wikipedia.org/wiki/Satellite_Based_Augmentation_System


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iBar

system for the interactive design of any bar-counter. Integrated video-projectors can projectany content on the milky bar-surface. Theintelligent tracking system of iBar detects allobjects touching the surface. This input is usedto let the projected content interact dynamically

with the movements on the counter. Objects canbe illuminated at their position or virtual objectscan be "touched" with the fingers.


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AccuracyBased on the area that technology can cover

Sensing Type AccuracyIR beacons + smartBadges RoomRF + smart badges RoomRFID Can be made accurate to less than 3 m

Ultrasonic Accurate to 10 cmWLAN 1-10m

GPS 10-50m

AccuracyBased on resolution qualityGPS HAS THE BEST RESOLUTION QUALITYAlthough GPS can provide accuracy of approximately 1 to 3 meters this is

not possible under all circumstances and for all devices. Inexpensive GPSreceivers can only locate positions to within 10 metres 95 percent of the time.The percentage of the times that the prescribed accuracy is achieved is calledprecision of the system.

Location Sensing Technologies

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