What is energy harvesting technology?

With the advent of the intelligent era, wireless communication technology plays an important role in the field of scientific research and human production and life. 

Wireless Sensor Networks (WSN) are increasingly being integrated into industrial and home applications such as transportation, smart homes, military surveillance, and environmental monitoring. With the emergence of various forms of wireless portable electronic products, such as iPad, cell phones, computers and so on. Intelligent mobile devices and wireless sensor network devices have gradually become a necessity in life, but due to the limited energy of their own power supply and batteries will pollute the environment and other negative factors have become an important factor restricting their development, in order to meet the needs of these products, the problem of energy consumption in communication networks has gradually aroused widespread concern in all walks of life.In order to solve the above problems, scholars have proposed an economical and environmentally friendly solution that can extend the life of wireless - Energy Harvesting (EH) technology, which is capable of charging electronic products anytime and anywhere. Therefore, energy harvesting from natural resources such as solar energy, water energy, tidal energy, wind energy, etc. has attracted great attention from all walks of life.

For the traditional power supply mode, due to the limited energy of the battery, the sensor equipment can not realize the continuous power supply. Frequent charging or replacement of batteries not only poses safety risks, but also consumes a lot of manpower and resources, and at the same time causes some pollution to the natural environment. In response to the call for "green communication", researchers have devoted great attention to improving the economic efficiency of the communication industry and solving the problem of energy consumption.EH sensor nodes collect energy from traditional renewable energy sources (e.g., solar, wind, water, and heat), and the use of renewable energy sources can effectively solve the problem of rapid power consumption, high energy consumption, and low energy consumption of battery-driven sensor nodes. powered sensor nodes that consume power quickly and have a short lifespan.