The Wireless Sensor Network for Home-Care System Using ZigBee
#1

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Abstract
In this paper, we presented the wireless sensor
networks (WSN) to observe the human physiological
signals by ZigBee, which is provided with lower power
consumption, small volume, high expansion, stylization
and two-way transmission, etc. ZigBee is generally
used for home care, digital home control, industrial
and security control. This paper developed a suite of
home care sensor network system by ZigBee’s
characteristic, which is embedded three sensors
(temperature sensor, humid sensor, and light sensor).
It is attached to other sensors, such as the biosensor
for observe heart rate and blood pressure. We
implemented Panasonic EW3035 blood pressure
monitor to measure heart rate and blood pressure. The
biosensor transmits measured signals via ZigBee, and
then sends to the remote wireless monitor for
acquiring the observed human physiological signals.
The remote wireless monitor is constructed of ZigBee
and personal computer (PC). The measured signals
send to the PC, which can be data collection,
analyzing and statistic. When the measured signals
over the standard value, the personal computer sends
Global System for Mobile Communication (GSM)
short message to the manager. The manager can use
the PC or personal digital assistant (PDA) to observe
the observed human physiological signals in the
remote place.
1. Introduction
In recent years, the world is facing a common
problem that the number of elderly people is increasing
[1]. Hence, the problem of home-care for elderly
people is very important. In recently, wireless sensor
networks are used to structure home-care system in
many researches.
Wireless sensor networks application for
physiological signals communication transmission has
many technologies. Such as the Infrared, Bluetooth
and ZigBee, etc. Because the angle limit problem of
the infrared transmission, and the infrared have not be
used for Physiological signal transmission. Although
Bluetooth is better than ZigBee for transmission rate,
but ZigBee has lower power consumption [2]. Hence,
ZigBee is generally used for 24 hours monitor of
communication transmission systems.
The structure of the wireless sensor network for
home-care system illustrate in Figure 1. The first
procedure of the system that we use the biosensor to
measure heart rate and blood pressure from human
body, the measured signal sends to the end device and
than sends to the router, which is responsible for
transmit the measured signal between end device and
coordinator. When the measured signals send to the PC
via the RS-232 serial port communication interface [3],
the PC can analyze and store signal. We can send the
signal to remote PC or PDA from the internet. In
particular, when measured signals over the standard
value, the personal computer will send GSM short
message to absent manager’s mobile phone.
2. ZigBee overview
ZigBee takes its name from the zigzag flying of
bees that forms a mesh network among flowers. It is an
individually simple organism that works together to
tackle complex tasks [4]. ZigBee has built on the IEEE
802.15.4 low-rate, wireless personal area networks
(WPAN) standard. The IEEE 802.15.4 defines the
physical layer (PHY) and media access control (MAC)
layer. The physical layer (PHY) supports three radio
bands, those are individually defined 2.4GHz ISM
band (Worldwide) with 16 channels, 915MHz ISM
band (Americas) with 10 channels, and 868MHz band
(Europe) with single channel [5],[6], the data rates are
individually defined 250Kbps at 2.4GHz, 40Kbps at
915MHz, and 20Kbps at 868MHz.
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to get information about the topic "wireless sensor network managment system based on zigbee communication" full report ppt and related topic refer the page link bellow

http://studentbank.in/report-the-wireles...ing-zigbee

http://studentbank.in/report-zigbee-base...e=threaded
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