Wireless sensor network node power system based on vibrating mechanical energy

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...

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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

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