Wireless sensor network node power system based on vibrating mechanical energy

A wireless sensor and network node technology, applied in the direction of electric energy storage system, generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., can solve the problem of unfavorable network node normal operation and limited battery storage capacity , unfavorable battery life and other issues

Inactive Publication Date: 2012-09-19
HENAN UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

The electrical energy collected by the piezoelectric energy harvesting device is usually stored in an energy storage device (such as a battery), and the battery is usually used to directly supply power to the network nodes. However, the energy collected by the piezoelectric energy harvesting device is often small, and the storage capacity of the battery is limited. If the battery is always in the state of charging and discharging at the same time, it is not conducive to the life of the battery and the normal operation of the network nodes

Method used

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  • Wireless sensor network node power system based on vibrating mechanical energy
  • Wireless sensor network node power system based on vibrating mechanical energy
  • Wireless sensor network node power system based on vibrating mechanical energy

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Embodiment Construction

[0073] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0074] Such as figure 1 It is a functional block diagram of the power management system of the present invention. The piezoelectric power generation device converts vibration into alternating current, and after being processed by the piezoelectric energy conversion device, direct current is formed to charge the energy storage unit. The energy storage unit includes at least a battery, and the battery passes through the energy management unit. Connect the power to the wireless network node. The energy storage unit in the present invention includes a constant voltage charger and a set of rechargeable batteries.

[0075] The circuit of the energy management unit such as figure 2 As shown, it includes an intelligent switch circuit X and a voltage stabilizing circuit Y. The input of the intelligent switching circuit X is connected to the battery, the output is ...

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Abstract

The invention relates to a wireless sensor network node power system based on vibrating mechanical energy. An energy managing unit is additionally arranged between an energy storing unit and a wireless network node; the energy managing unit can cut off the power supply to the wireless network node when the electric quantity of the energy storing unit is low so as to charge the energy storing unit; when the power is charged to a certain degree, electric is discharged to the wireless network node through the energy managing unit. The wireless sensor network node power system provides a practical way for a piezoelectric energy collecting device to charge the network node.

Description

technical field [0001] The invention relates to a wireless sensor network node power supply system based on vibration mechanical energy. Background technique [0002] At present, the wireless sensor network has attracted much attention in the world, and it is a frontier hot research field involving a high degree of interdisciplinary and highly integrated knowledge. It integrates sensor technology, embedded computing technology, modern network and wireless communication technology, and distributed information processing technology. to the user. Therefore, wireless sensor networks have potential practical value in many important fields such as military defense, industry and agriculture, urban management, biomedicine, environmental monitoring, emergency rescue and disaster relief, anti-terrorism and anti-terrorism, and remote control in dangerous areas. [0003] However, wireless sensor networks have not been marketed as quickly as people originally expected, and one of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02N2/18H02J15/00
Inventor 郑国强张利伟李济顺李佩佩张前进梁钊彭勃马华红李敏付磊
Owner HENAN UNIV OF SCI & TECH
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