Abstract: ZigBee technology is a kind of two-way wireless communication technology in short distance, low complexity, low power consumption, low data rate, low cost, which is suitable for the automatic control and remote control. The wireless sensor network may be arranged in a hostile environment, in order to prevent the supply into the fake information to the network, need to realize the security of multicast source authentication based on wireless sensor network. Therefore, this paper presents implementation scheme of wireless sensor network technology 2.4 GHz ZigBee and 433 MHz combined. Each sensor node can be collected, simple computing environment data and to communicate with other nodes. The paper put forward development novel organization structure of wireless sensor network protocol based on ZigBee technology. The experimental results show that the terminal node has extremely low power consumption, long time work continuously, and this method has good self-organization, self-healing function. Copyright © 2013 IFSA.
Keywords: Wireless sensor network, ZigBee, Sensor nodes.
1. Introduction
As a result of computation, communication and sensor three technologies combined with wireless sensor network, is a novel technology about acquiring and processing information. Due to the improvement of recent micro manufacturing technology, communication technology and battery technology, ability makes tiny sensor has sensing, wireless communication and information processing. This kind of sensor not only can sense and detect the target object and environment change, and processing the data collected, and the processed data in wireless transmission mode to the data collection center or base station [1]. This tiny sensor is usually composed of sensor unit, data processing unit and communication unit, sensor, data processing unit and
communication modules of tiny nodes through the self-organizing way constitute a network integrated random distribution.
As a newly emerging technology, wireless sensor network to establish a good, good robustness is still faced with many challenges. But due to some special characteristics, are very different design method of wireless sensor network and the existing wireless network. For example, since the sensor nodes in sensor network distribution is dense, so the data management and processing technology of large range. Secondly, the wireless sensor network node deployment in general human to reach and contact area is facing great challenges to maintain the sensor network node. In addition, the power consumption is a very important issue, wireless sensor node is a tiny device, with limited power, in some applications, replace the power supply is almost impossible.
ZigBee technology is a kind of two-way wireless communication technology in short distance, low complexity, low power consumption, low data rate, low cost, which is suitable for the automatic control and remote control, can be embedded in various devices, and supports for the geographical location. With respect to various wireless existing wireless communications technology, ZigBee technology will be the lowest power consumption and cost of technology. The ZigBee protocol is suite by the application of the application of high standards, convergence layer, network layer, data link layer and physical layer.
The data link layer and medium access control layer provides reliable communication channel for the neighbor nodes, in the MAC protocol, node to determine its ability to access communication channel by monitoring the neighbor node sends data. The carrier sense method is particularly vulnerable to denial of service attack is DOS. Methods using carrier sense in certain MAC layer protocol to neighboring nodes use the channel. When the channel conflict, nodes use a binary value index regression algorithm to determine the time to send data, conflict the attacker only needs to produce a byte can destroy the entire packet [2]. Because as long as part of the data conflict will cause the receiver to check data packets and do not match. In response to control information ACK receiver will send the data conflict sending node according to the binary exponential regression algorithm to choose the transmission time. In wireless sensor networks, data processing by the node itself, the purpose is to reduce the amount of data transmitted in wireless links, only the relevant information with other nodes in the link transmission. Characteristics of data-centric is another feature of wireless sensor networks, because the nodes not planned in advance, but the node location is not determined in advance, so that there are some nodes due to the occurrence of many wrong or cannot carry out the specified task and stopped running. In order to monitor the target object in the network, configuration of redundant nodes is necessary, communication and collaboration, sharing of data between nodes that can, can guarantee to obtain the monitored object more comprehensive data. Wireless sensor network is a wireless network composed of a set of ZigBee nodes with Ad Hoc, its purpose is to perceive ZigBee技术无线传感器网络英文文献和中文翻译:http://www.chuibin.com/fanyi/lunwen_206557.html