WSN

WSN

1. Network

   • GSM
     • multimedia
     • sensor data
   • Zigbee/Mesh
     • multimedia transmission??
   • LoRa WAN
     • Study
   • Routing protocol
     • position-centric, multipath
   • Data
     • text-limited amount of information superiority
       • 30-60 Bytes, keywords --intrusion,GPS location
     • Low data rate can also work, later send image and video
     • Ack. after data reception

2. Sensors

   • GPS
     • location of nodes
   • audio
     • detect presence of human and vehicles and trace their path
   • sesimic
     • any physical activity detection
     • Study
   • PIR
     • customize PIR for direction

3. network of interconnected modules to detect intruders in military

   • protection of military base

4. Powered by Solar panel

5. mother Board

   • android
     • iot things
   • linux
     • open embedded
       • device drivers and kernel compilation
   • developer kits already available
     • imote2
       • Rechargable battery,nominal range 30 m {2}
     • Tmote sky
       • 50m indoor range, 125m outdoor range,fast wakeup from sleep{3}
     • mica2Dot
     • sleep mode,RAM, Program memory??
   • LinkItOne

6. Processing of data

   • at each node , if possible
     • transmission of all data consume more power
   • at gateway
     • only if data from multiple nodes is required

7. transmission

   • normal
     • 2-3 times a day
   • event
     • how many times??
   • continuous monitoring

8. security of nodes

   • nodes can be traced through radiations
     • how to hide nodes from getting traced???
   • intruders come with jammers
     • jammers can jam only one frequency
       • 2G and 3G both should be used, normally transmit using 2G, in case of jamming use 3G
   • data security from evasdropping,message integrity
     • cryptography

9. Already built WSN

   • textron Terrain Commander{1(a)}
     • Terrain Commander OASIS provides next generation target detection, classification, and tracking through smart sensor fusion of beam-forming acoustic, seismic, passive infrared, and magnetic sensors and also uses electro-optics imaging system
       • 3 months internal battery along with solar charging
   • Harris Falcon Watch Remote Intrusion Detection and Surveillance System{1(b)}
     • The Harris Falcon Watch system utilizes seismic detectors, which detect ground vibration caused by vehicles or pedestrians; magnetic detectors, which detect the movement of metal objects such as weapons or vehicles, and passive infrared (PIR) sensors, which detect the movement of thermal signatures such as vehicles or pedestrians. Input is processed at the point of detection and then the resulting alarms are transmitted by radio to a monitoring point.
       • https://www.harris.com/press-releases/2005/12/harris-corporation-introduces-falcon-watch-remote-intrusion-detection-and

10. tpoplogy??

    • distance between nodes??