Understanding wireless sensors

　　The application of wireless sensors is very wide, and every electronic device in life contains wireless sensors. Therefore, everyone is no stranger to wireless sensors. In order to further enhance everyone's understanding of wireless sensors, this article will introduce wireless sensors.

　　The component modules of the wireless sensor are encapsulated in a shell. When it is working, it will be powered by a battery or a vibration generator to form a wireless sensor network node. It consists of randomly distributed micro-nodes integrated with sensors, data processing units and communication modules. The way of organization constitutes a network. A sensor network system usually includes sensor nodes, sink nodes and management nodes.

　　The sensor network system usually includes sensor nodes, sink nodes and management nodes.

　　A large number of sensor nodes are randomly deployed in or near the monitoring area, which can form a network through self-organization. The data monitored by a sensor node is transmitted hop by hop along other sensor nodes. During the transmission, the monitoring data may be processed by multiple nodes, routed to the sink node after multiple hops, and finally reach the management node through the Internet or satellite. The user configures and manages the sensor network through the management node, releases monitoring tasks and collects monitoring data.

　　A wireless sensor network (Wireless Sensor Network, WSN) is a multi-hop self-organizing network system formed by a large number of inexpensive micro sensor nodes deployed in the monitoring area. Its purpose is to cooperatively sense, collect, and Process the information of the perceived object in the network coverage area and send it to the observer. Sensors, perception objects and observers constitute the three elements of wireless sensor networks.

　　The rapid development of Micro-Electro-Mechanism System (MEMS), System on Chip (SOC, System on Chip), wireless communication and low-power embedded technology gave birth to wireless sensor networks (Wireless Sensor Networks, WSN), And with its low power consumption, low cost, distributed and self-organizing characteristics, it has brought a revolution in information perception. The wireless sensor network is a multi-hop self-organizing network formed by a large number of cheap micro sensor nodes deployed in the monitoring area.

　　Many people believe that the importance of this technology is comparable to that of the Internet: Just as the Internet enables computers to access all kinds of digital information regardless of where it is stored, sensor networks will expand the ability of people to interact with the real world remotely. . It is even called a new type of computer system, because it is different from the hardware in the past, which can be distributed everywhere and the ability of collective analysis.

　　However, in many ways, the current wireless sensor network is like the Internet as far back as 1970, when the Internet only connected less than 200 universities and military laboratories, and researchers are still experimenting with various communication protocols and addressing. plan. Now, most sensor networks only connect less than 100 nodes, and more nodes and communication lines will make it very complicated and difficult to work properly. Another reason is that the price of a single sensor node is currently not cheap, and the battery life can only last for a few months under the best circumstances. However, these problems are not insurmountable. Xinli Technology's wireless sensor network products are already on the market and have fascinating features. Related products can be viewed in the product center of the official website.

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