Wireless sensor mixed energy collection device and operating method

Abstract

The invention discloses a wireless sensor mixed energy collection device and an operating method. The device comprises solar energy and wind energy collection subsystems, a central processing unit, aPWM (pulse width modulator) and an energy storage capacitor. The central processing unit controls the two subsystems, and collected solar energy and wind energy are stored in the energy storage capacity to supply power to wireless sensor nodes. The operating method includes that a photovoltaic cell and a wind power generator convert solar energy and wind energy into electric energy respectively tostore in a solar energy storage module and a wind energy storage module, and stored electric energy reaching a maximum value is outputted to the energy storage capacitor; the central processing unitadopts a fuzzy logic control method according to output voltage of the photovoltaic cell to enable the photovoltaic cell to operate at a maximum power point, and the central processing unit adopts a local optimization method according to current power of the wind power generator to adjust the rotating speed of the wind power generator so as to enable the wind power generator to operate at a maximum power point. Solar energy and wind energy are collected at the same time to supply power to a wireless sensor network, and continuity and reliability in operation are realized.

Description

technical field [0001] The invention belongs to the technical field of wireless sensing, and in particular relates to a hybrid energy collection device and an operating method of a wireless sensor. Background technique [0002] In recent years, with the development of science and technology, the popularity of micro-electromechanical systems, system-on-chip, wireless communication and low-power embedded, the application range of wireless sensor networks has become more and more extensive. [0003] Energy is necessary for wireless sensor networks, and it has also become one of the core issues in the research of wireless sensor networks. The existing energy collection methods for wireless sensors are all in a single way. For example, some schemes use photovoltaic cells to collect solar energy to supply power to wireless sensor nodes, while others use wind generators to collect wind energy for power supply. [0004] In order for the wireless sensor network to continue to work n...

AI Technical Summary

Problems solved by technology

The current wireless sensor power supply device can only collect energy from a single environmental energy source. When the energy source in the environment where the node is located is lacking (for example, the photovoltaic battery can only stop working at night), the node cannot work reliably without stopping

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