ABSTRACT
Sensor network, which is made by the convergence of sensor,wireless
communication and networks technologies, is a novel technology about acquiring and
processing information. Wireless sensor network (WSN) is a new area of computer
science and communication technology, it is receiving increasing attention from all lines
due to its wide application future. There are various kinds of application-specific
routing protocols devised for wireless sensor networks by researchers around the world.
The WSN is consisted of lots of micro sensor nodes. These nodes have definite energy
and can't be replaced once they are disposed, so the energy is very important resource
for the WSN which is related with the lifetime of the network. Saving energy is one
primary goal during the study for WSN.
Low Power Cost, an important point in designing WSN, is considered with
emphasis in this paper.According to making use of the Low Power Mode of the
processor and the sleep function of the wireless communication module and designing
related software,the power cost of the sensor nodes is reduced as much as possible, as a
result of which,the lives of the sensor nodes are extended.
In this paper, the research background of wireless sensor network is introduced
and the characteristics are analyzed first. Then on the basis of the foregoing research,
The Wireless Sensor Network Experience Platform is designed.In this paper,hardware
and software are both designed. As for hardware, low power components is used in this
system, such as MSP430F449、CC1100、MAX1793、SHT11、SP3220. Then the system
platform is created,and the PCB board is designed,finally complete the hardware design
of sensor point.As for software,interrupt event-driven programming method is applied,
with which the main process and interrupt process is designed.
Communication protocol is the base of reliable and efficient data transmission,the
paper focus on the MAC protocol based on competition and time division multiplexing,
analyzing their advantages and disadvantages and different protocol applying to
different occasions.
This paper focus on in-depth analysis of the low-power routing protocols LEACH
and PEGASIS, then their respective advantages and disadvantages are summarized, and
several other typical routing protocols are introduced briefly, and routing protocol
described in the text are compared together. Finally, the routing protocol energy