Wireless sensor network technology and new development

As the micro-electro-mechanical system ( Micro- 电- - - - - - MechanismSystem, MEMS) , on a chip system ( SOC SystemonChip) , wireless communications and the rapid development of low-power embedded technology, spawned a wireless sensor network ( WirelessSensorNetworks, WSN) And with its low power consumption, low cost, distributed and self-organization characteristics brought information perception of a revolution. Within the wireless sensor network (WSN) is deployed in monitoring area by a large number of low-cost micro sensor nodes, through wireless communication mode to form a multiple hops self-organizing network.

wireless sensor network ( WirelessSensorNetwork, WSN) Is deployed in monitoring area within a large number of low-cost micro sensor nodes, through wireless communication mode to form a multiple hops self-organizing network system, its purpose is collaboration to perceive, collection and processing network coverage area perceived object information, and sent to the observer. Sensors, object and perception observer constitute the three elements of the wireless sensor network.

of wireless sensor network (WSN) have many types of sensors that can detect include earthquakes, electromagnetic, temperature, humidity, noise, light intensity, pressure, soil composition, size, speed and direction of a moving object surrounding environments, such as a variety of phenomena. Based on MEMS micro sensor technology and wireless networking technology for wireless sensor network (WSN) gives a broad application prospect. The potential application fields can be summarized as military, aviation, anti-terrorism, explosion-proof, disaster relief, environmental, health, health care, household, industrial, commercial, and other fields.

a lot of people think, the importance of this technology can be comparable with the Internet: as the Internet, enables the computer to access a variety of digital information and can be preserved regardless of where, sensor networks will be able to expand the ability of remote interaction with the real world. It even be called a kind of new type of computer system, this is because it is different from the past hardware can be spreading, and the characteristics of collective analysis ability. In many ways, however, now the wireless sensor network of the Internet is like as far back as 1970, when the Internet connection only less than 200 universities and military LABS, and researchers are still in the experimental various communication protocol and addressing scheme. Now, most of the sensor network connection only less than 100 nodes, more nodes and communication lines can make its become very complex and difficult and not work properly. The other reason is that the price of a single sensor node is not cheap, and battery life in the best case is only for a few months. These problems are not insurmountable, however, some products have been listed, the wireless sensor network and possessed the function of absorbing new products also will appear within a few years.

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