Wireless sensor network (WSN) node self-powered system based on solar energy-wind energy complementation

A technology of power supply system and solar energy, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, collectors, electric vehicles, etc., can solve the problem of low energy density, inability to complement each other, and limit the service life of self-powered systems and the use environment to achieve the effect of solving short life and realizing self-power supply

CN103259323AInactive Publication Date: 2013-08-21DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-08-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a wireless sensor network (WSN) node self-powered system based on solar energy-wind energy complementation. The system mainly comprises a solar energy acquisition module, a piezoelectric type vertical axis wind energy acquisition module, a super-capacitor energy storage module and an interface circuit, wherein the solar energy acquisition module acquires luminous energy in the environment through a solar cell panel, the piezoelectric type vertical axis wind energy acquisition module acquires wind energy in the environment, the super-capacitor energy storage module stores the acquired energy into a super capacitor, and the interface circuit provides a channel for energy storage and WSN node power supply. In addition, in order to improve acquisition efficiency of the wind energy acquisition module and reduce influences of a wind direction, a vertical axis piezoelectric type scheme is adopted by the wind energy acquisition module. Due to the facts that rechargeable times of a lithium cell are limited, and in the process of acquisition of environmental energy, charging and discharging are frequent, the super capacitor in the system is used for replacing the lithium cell to serve as a system energy storage unit, and the service life of the energy storage unit can be prolonged. The WSN node self-powered system can collect energy in the environment, does not need to conduct maintenance on a cell, such as cell replacement and charging, therefore prolongs service life of a node, and solves the energy supply problem of a WSN.
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Description

technical field

[0001] The invention belongs to the technical field of communication and broadcasting, and relates to a self-powered device for a WSN (Wireless Sensor Network) node based on solar-wind energy complementation, which is mainly used for energy self-supply of the WSN node. Background technique

[0002] With the development of wireless sensor network technology, wireless sensor network is widely used in military, aviation, explosion-proof, disaster relief, environment, medical treatment, health care, home furnishing, industry, commerce, etc. field. A wireless sensor network is a wireless network composed of a large number of stationary or moving sensors in a self-organizing and multi-hop manner. user.

[0003] Traditional wireless sensor network nodes usually use dry batteries or rechargeable batteries to provide energy, but due to the limited capacity of batteries, the batteries need to be replaced or charged regularly. However, when the number of sensor nodes...

Examples

Embodiment Construction

[0022] Specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and drawings, but the embodiments of the present invention are not limited thereto.

[0023] Such as figure 1 As shown in the figure, it is easy to see the connection relationship between the modules: the interface circuit is the link between the various modules in the system. The solar energy harvesting module and the piezoelectric vertical axis wind energy harvesting module collect the energy in the environment and charge the supercapacitor through the interface circuit, store the electric energy in the supercapacitor energy storage module, and directly supply power to the wireless sensor network nodes (when When the energy in the supercapacitor energy storage module is full). When the amount of environmental energy collected is not enough to supply power to the nodes, the supercapacitor will discharge to supply power to the nodes. Once the ener...