Wireless Sensor Networks, Interrupt Handling And The Communication Mechanism

Recently, Wireless Sensor Network technology is paid much attention all over the world. Compared with Mobile Communication Network, Wireless Local Network and so on, the WSN has much more development potential. Firstly, the nodes of Wireless Sensor Network can organize a network themselves without any support of foundational facilities. Secondly, Wireless Sensor Network is the applicable, distributing, high dense, dynamically connecting wireless network system, which is based on data accession. It provides data through wireless network communication platform and mainly works in the areas that lack or hard to build foundational communication facilities. More importantly, the development of current wireless communication technology and electronic technology makes the nodes of Wireless Sensor Network much cheaper, consume less power but function much well. Accordingly, more and more researchers in the world begin to study on the Wireless Sensor Network.Currently, Wireless Sensor Network is in the researching period. To make it applicable earlier, many displaying systems are built and many relative researching papers are published overseas. Recently, some domestic research organizations and universities make researches on the theories and applications of Wireless Sensor Network. From the relative materials we get, it is still in the starting stage. As the important research and development organization in the country, we are aiming to build the integrative platform and standard system on Wireless Sensor Network.This article is to build the WSN timer, data accessing module and back-off mechanism mainly through the study of interrupt. The timer provides the WSN with the accurate time control. It determines the performance and efficiency of WSN. Many modules in the WSN may use it directly or indirectly. So, the timer is an important part of WSN. The data accessing module provide WSN with reliable data, which is converted from analog signal to digital information and finally sent to gateway and terminal user. Back-off mechanism is an important part in communication technology. It ensures data sent from the nodes and makes the communication more reliable.