In recent years, wireless communication, integrated circuit sensors, and microcomputer systems In recent years, the rapid development of technologies such as wireless communication, integrated circuit sensors, and microcomputer systems (MEMS) has promoted mass production of low-cost, power-hungry wireless sensors. It is a resource-constrained embedded device that integrates sensing function with driving control and computing communication. Wireless sensor network (WSN) is a self-organizing network composed of a large number of wireless sensors. The purpose is to collaboratively perceive, The object information in the network coverage area is collected and processed, and the purpose is to collaboratively perceive, collect and process the object information in the network coverage area, and transmit it to the required users.

WSN is considered to be one of the most important technologies of the 21st century and will have a profound impact on the future lifestyle of mankind. Has a profound impact on life. WSN ranked first among the top ten emerging technologies that affected the future of human life in the United States in February 2003. In the same year, WSN was also included in the future technical edition of the US Business Week.

The composition and characteristics of the composition and characteristics of the WSN

The WSN consists of a large number of wireless sensors in a self-organizing manner (see Figure 1). It measures the signals in the environment by means of a variety of sensors built into the nodes, so that various required data are detected and transmitted to the required places via the network.

Wireless sensors generally consist of a data acquisition unit, a processing power supply, and other wireless sensors generally consisting of a data acquisition unit, a processing power supply, and the like (see Figure 2). The form of the monitored physical signal determines the type of sensor, such as the temperature sensor, which monitors the pressure of the sound. The processing usually uses an embedded digital sensor to monitor the pressure of the sound. The processing usually adopts an embedded data transmission unit mainly composed of a low-power, short-distance wireless communication module. The miniaturized operating system selects the transmission unit mainly composed of a low-power, short-distance wireless communication module. The miniaturized operating system uses embedded operating systems such as Vxworks, Î¼COS-II, Î¼Clinux, and TInyOS.

Sensor networks have some unique features compared to the system, mainly:

1. Nodes are dense, each being both a sensor and a route;

2. Limited computing power and communication and power supply;

3. Unique underlying communication transmission medium;

4. There is no central, self-organizing, multi-hop communication between sensor nodes;

5. It is possible to transmit data through multiple sources at the same time - the destination route;

6. The network has strong robustness and good scalability.

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