Real Time Monitoring of Wireless Sensor Networks. Kaushal Mehta 993940184. Motivation. A large class of wireless sensor networks are designed and used for monitoring and surveillance.
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Kaushal Mehta 993940184
stargate device. But they will have different transmit times so that their messages do not collide.
Ways to self-heal the link suffering for low quality
Link Quality = Actual No. of Transmission
Expected No. of Transmission
Link Quality = 5
Link Quality = 1
Link Quality = 4
Link Quality = .8
This packet will instruct the node to change its route to ‘monitor’, via some intermediate
node. So, now the node will send the data to the monitor in 2 hops.
repeat the Step 1 to Step 3 for 2 more times before announcing the failure of
Sensor Mote 1
Sensor Mote 2
Route via 1
Since, monitor receives packet via Sensor 1, there is problem with link and mote has not failed.
If, this message would not have
received, we would have
concluded that mote has failed.
Count : 1
Count : 2
Count : 3
MICA2 AA Battery Pack Service Life Test
From Mica2 Data sheet
Problem with this approach
Need to measure the current drawn accurately.
Need to know the duty cycle accurately.