What are the common time synchronization mechanisms in sensor networks? What are their characteristics?

First of all, the common time synchronization mechanisms in sensor networks are:

1. Sensor nodes usually need to cooperate with each other. Data fusion of complex monitoring and sensing tasks is a typical example of cooperative operation. The data collected by different nodes are finally fused to form a meaningful result.

2. Some energy-saving schemes of sensor networks are realized by time synchronization.

Second, the characteristics:

1, the sensor node is small in size, low in cost and limited in computing power.

2. There are many sensor nodes, which are easy to fail and adaptive.

3. The communication radius is small and the bandwidth is very low.

4. Power supply energy is the key to network life.

5. Data management and processing is the core technology of sensor networks.

Sensor network

It combines sensor technology, embedded computing technology, modern network and wireless communication technology, distributed information processing technology and so on. It can monitor, perceive and collect the information of various environments or monitored objects in real time through various integrated micro-sensors, process the information through embedded systems, and transmit the perceived information to user terminals in a multi-hop relay way through random self-organizing wireless communication networks. So as to truly realize the concept of "ubiquitous computing".