
62-1
62.1 Introduction
Wireless sensors that have more advantages relative to wired sensors are playing an important role in
improving the quality of life in daily indoor space. e applications include home security systems to
im
prove
th
e
sa
fety
of ou
r
ho
me
an
d
vi
tal
si
gns
mo
nitoring
sy
stems
to im
prove
ou
r
he
alth
. e se
n-
sor
sy
stems
ca
n
re
motely
de
tect
th
e
ec
ho
re
ected
fr
om
a pe
rson
an
d
th
en
es
timate
th
e
st
ate
an
d/or
vi
tal
si
gns
su
ch
as re
spiration
ra
te
an
d
he
art
ra
te,
fo
r
ex
ample
. Se
veral
ty
pes
of wi
reless
se
nsor
de
vice
ha
ve
thu
s
fa
r
be
en
de
veloped
su
ch
as vi
deo
ca
mera,
pa
ssive
in
frared
(I
R),
an
d
mi
crowave
. e vi
deo
ca
mera
is un
acceptabl