Prepared by: Shah Faisal Iqbal
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Motivation
What is Fatigue???
Proposed protocol
Placement of nodes
Scenarios
Energy analysis
Radio model parameters
Transmission model
Simulations and results
Comparison table
conclusion
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Wireless
Body
Area
Sensor
Networks
(WBASNs) consist of on-body and in-body
sensors on human body for monitoring
health.
In WBASNs protocols are concerned with
energy efficiency.
Specific mobility scenarios are not considered
in previous protocols.
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Fatigue, physical or mental, is a subjective
feeling of tiredness.
Physical fatigue is the inability of muscles to
maintain optimal physical performance.
Fatigue is caused by loaded work, depression,
boredom, mental stress, lack of sleep, etc.
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For improvement of security, we must know
the physical status of soldiers.
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An important factor in physical status of
soldier is fatigue.
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If we know state of fatigue in soldier then we
can send backup to them.
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We propose a protocol for measuring fatigue
of soldier.
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Four sensors are attached on body of soldiers
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Temperature sensor
Blood glucose level sensor
Heartbeat sensor
Base station
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Temperature sensor is placed on finger tip to
measure temperature.
Blood glucose level sensor is also positioned on
finger tip to measure glucose level in blood.
• We assume that sensor takes blood samples periodically
and checks glucose level in blood.
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Heartbeat sensor is placed on heart to measure
heartbeat.
BS is placed on wrist of soldier, all the above
three sensors send their data to BS.
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Placement of nodes on soldiers body.
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We take three scenarios for measuring fatigue
of soldier.
◦ Walking (3.0 miles per hour)
◦ Slow running (5.0 miles per hour)
◦ Fast running (7.0 miles per hour)
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In all the three scenarios, sensors sense the
heartbeat, glucose level and temperature and
send their data to BS.
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For state of fatigue we use harris benedict
formula. i.e.
◦ 𝐴 = 13.75 ∗ 𝑤𝑒𝑖𝑔ℎ𝑡 𝑘𝑔
◦ 𝐵 = 5.003 ∗ ℎ𝑒𝑖𝑔ℎ𝑡 𝑐𝑚
◦ 𝐶 = (6.775 ∗ age(years))
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𝐵𝑀𝑅 = 66.5 + 𝐴 + 𝐵 + 𝐶
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BMR is the amount of energy required to
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If soldier’s condition meets this level then this is
called as state of fatigue.
maintain metabolic rate of body.
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Energy consumption model used in paper is
summarized in the following equations.
Where:
Etx= transmission energy
Erx=Reception energy
ERXelec=Energy dissipated by radio to run circuitry
for receiver
ETXelec=Energy
dissipated
circuitry for transmitter
by
Eamp =Amplification energy
n=Path loss exponent
K=Number of transmitted bits
radio
to
run
the
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Following are the parameters of radio model
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Figure shows sending of data from nodes to
BS(server)
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We used MATLAB for simulation.
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Our goals in conducting simulation are,
◦ Measuring fatigue of soldier while walking, running
slowly and running very fast.
◦ Extension of sensor lifetime.
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From figure we can see that lifetime of
sensors is more in walking scenario, because
of less activities and sensor does not send
data more often.
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Throughput of running scenario is higher
then walking and slow running scenario
because heartbeat increases faster and
sensor has to send data.
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For measuring fatigue, we set a threshold by
harris benedict formula.
1500 (joules) is set to be threshold in our
simulations.
Figure in next slide shows the fatigue of
soldier.
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When soldier is walking state of fatigue
comes later compared with slow and fast
running scenarios because of soldiers
activity.
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In fast running scenario sensors drain off
their energy quickly than walking and slow
running scenario, as they are busy in getting
data from soldiers body.
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Comparison table of lifetime and throughput
for three scenarios.
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Table shows the fatigue of soldier in rounds.
When soldier is walking his state of fatigue in
the 10182th round.
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Routing protocol for measuring fatigue of
soldier.
Performs better in terms of sensor lifetime
and throughput.
Any Question ???