Multi-energy collecting wireless sensor network node power source

Abstract

The invention discloses a multi-energy collecting wireless sensor network node power source which comprises an energy collecting module, a power selecting module, a charging control module, a discharging management module and a control core. The energy collecting module collects solar energy, wind energy and water energy from the environment through a small solar cell panel, a wind power generator and a water power generator and enables the energy to be converted into electric energy. The power selecting module selects one kind of the environment energy to supply power according to judgment on the output power. The maximum energy tracking algorithm is used in the charging control module, and the duty ratio of a direct current boosting chopper circuit is controlled through PWM waves changed along with the output power to improve the charging efficiency. The discharging management module can select proper output voltage and provide stable energy supply. The multi-energy collecting wireless sensor network node power source is small in size, low in cost, low in power consumption, capable of guaranteeing that a node can have stable energy supply under different environmental conditions and capable of effectively prolonging the service life of the node.

Description

technical field [0001] The invention relates to a wireless sensor network node power supply for multi-energy collection. Background technique [0002] Wireless sensor networks have broad application prospects in environmental monitoring, smart home, transportation, precision agriculture and other fields, and have attracted more and more attention. As an important component of wireless sensor networks, sensor nodes are usually scattered in a certain area to monitor, sense and collect information of various environments and monitoring objects collaboratively in real time. The sensor node deployment environment and the actual application requirements determine that the node power supply cannot be connected to the normal power system for power supply in most cases. In the practical application of wireless sensor networks, the sensor nodes require a large number, are generally small in size, and usually carry batteries with very limited energy, but the exhaustion of battery ene...

AI Technical Summary

Problems solved by technology

There are two main research directions for this problem. One is to reduce the energy consumption of nodes as much as possible to prolong the life of nodes, such as considering various possible energy optimization schemes, and studying a variety of different sensor network networking schemes. , applying some energy-saving algorithms and protocols, but these cannot fundamentally solve the problem that the energy of the nodes may be exhausted; the second is to study how to collect energy from the environment where the nodes are located and store them effectively so that the nodes have the ability to supplement energy ability, the energy harvesting method has opened up a new direction for the solution of this bottleneck problem, and the research of the present invention is just based on this point

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