Quantum mechanics

Voltage

Engineering

Materials science

Embedded system

Real-time computing

Power (physics)

Computer science

Energy harvesting

Geology

Oceanography

Wind speed

Physics

Internet of Things

Renewable energy

Triboelectric effect

Automotive engineering

Underwater

Composite material

Wind power

Generator (circuit theory)

Meteorology

Nanogenerator

Electrical engineering

ACS Nano

The lack of efficient, low-cost, distributed energy collection methods is a vital factor restricting the application of the Internet of Things (IoT) in smart agriculture. This paper proposes a method based on triboelectric nanogenerator and electromagnetic generator to realize self-powered IoT nodes and self-powered sensors at the same time. An energy harvesting and sensing device based on electromagnetic-triboelectric hybrid generator (ES-ETHG) is designed. The peak power of ES-ETHG is 32.4 mW, which can supply power to IoT nodes for a long time with power management circuits. In addition, ES-ETHG can critically measure wind speed and wind level within the range of 3-15 m/s, and accurately detect wind direction within 2 s. Furthermore, the self-powered distributed weather sensing system based on ES-ETHG is developed to realize the remote collection of wind speed, wind direction, temperature, and humidity. This work proposes a solution for developing self-powered IoT and sensor in the field of smart agriculture.

Self-Powered Sensing for Smart Agriculture by Electromagnetic–Triboelectric Hybrid Generator