Photovoltaic-vibrational energy based power supply system for wireless sensor network nodes

Abstract

The invention provides a photovoltaic-vibrational energy based power supply system for wireless sensor network nodes. The system mainly comprises a piezoelectric vibration generating system, a photovoltaic generating system, a control switch and a power supply monitoring and managing device, wherein a piezoelectric ceramic self-generating unit generates alternating current energy by being vibrated or extruded by the external environment; after being converted by a piezoelectric energy conversion device, the alternating current energy is stored by an energy storage device of the piezoelectric vibration generating system; a solar cell pack of the photovoltaic generating system converts the solar energy into a direct current signal; after being converted by a solar conversion device, the signal is stored by an energy storage device of the photovoltaic generating system; and finally, the power supply monitoring and managing device and the control switch are used for controlling and dominating output of the electric energy in the energy storage device. The system not only effectively solves the problems of energy power supply and management of the wireless sensor network nodes, but also improves the working reliability of the wireless sensor network nodes and meanwhile is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a power supply device, in particular to a wireless sensor network node power supply system based on photovoltaic-vibration energy. Background technique [0002] With the development of wireless network sensor technology, its application in industrial, commercial, medical, consumer and military fields has gradually deepened, and the power supply problem has always been the key to extending the application life and reducing cost of wireless network sensors. Currently the most common and easiest way to power wireless sensor network nodes is still battery power. Due to the limited lifespan of ordinary batteries, in order to ensure the normal operation of wireless sensor network nodes, it is necessary to replace batteries in large quantities on a regular basis. In this way, not only the workload is heavy and the cost is high, but also the waste is very serious when the environment is harsh or other places that cannot be reached by ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: at present, the service life of the wireless sensor network node power supply battery is short and difficult to replace. In order to improve the power supply mode of the wireless sensor network node and solve the power dynamic management problem of combining solar energy and vibration energy power generation, Provide a wireless sensor network node power system based on photovoltaic-vibration energy

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