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Self-supply micro radio sensing network node based on the piezoelectric vibration power generation

A wireless sensor network, wireless sensor node technology, applied in the directions of generators/motors, piezoelectric/electrostrictive/magnetostrictive devices, piezoelectric effect/electrostrictive or magnetostrictive motors, etc. Solve the problems of weak electric power, output voltage without transformation, large volume, etc., to achieve the effect of reducing maintenance workload and low power consumption

Inactive Publication Date: 2007-08-15
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology

Both of these two patents use the positive piezoelectric effect of piezoelectric materials to convert the energy of the surrounding environment into electrical energy for the system to work, but the electrical energy generated by them is relatively weak and has a large volume, and the output voltage has not been transformed. Meet the requirements of the working voltage of wireless sensor nodes, not suitable for power supply of wireless sensor nodes

Method used

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  • Self-supply micro radio sensing network node based on the piezoelectric vibration power generation
  • Self-supply micro radio sensing network node based on the piezoelectric vibration power generation
  • Self-supply micro radio sensing network node based on the piezoelectric vibration power generation

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Embodiment Construction

[0043] The specific implementation of the self-powered miniature wireless sensor network node based on piezoelectric vibration power generation is shown in Figures 1-8. As shown in Figure 3, the piezoelectric transducer (6) in this embodiment comprises electrode (12), lead (11), piezoelectric sheet (14), cantilever beam (15), and a quality that produces inertial force block (13); the mode of operation of the piezoelectric transducer 6 is to generate inertial force through the vibration of the mass block (13), generate alternating stress in the transverse direction of the beam, and utilize the positive piezoelectric effect of the piezoelectric sheet (14) to generate electric energy , the electrical energy is exported through the wire (11). The node relies on the piezoelectric transducer piezoelectric vibration power supply (1) to supply power to the node. The specific working method is: the piezoelectric vibration power supply (1) converts the mechanical energy in the environme...

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Abstract

The related self-powered minimize wireless sensor network node for state monitor based on piezoelectric vibration comprises: a piezoelectric vibration power 1 including a long-term storage capacitor 10, a DC / DC converter 9, a voltage stabilizing tube 8, a voltage multiplier 7, and a piezoelectric transducer 6; a microcontroller 4 to operate the power supply of capacitor 10 to device 3 through a controlling switch 6, a RF transmitting device 3, and a sensor 5. Besides, the microcontroller 4 also processes data from sensor 5 and transmits result and control information together to device 3. This invention minimizes node power consumption.

Description

1. Technical field [0001] The invention relates to a self-powered miniature wireless sensor network node based on piezoelectric vibration power generation which is mainly used for state monitoring of aircraft, ships, vehicles, bridges and industrial equipment. The entire node does not need to be powered by a battery with a limited lifespan, thereby enhancing the maintenance-free nature of the wireless sensor node. 2. Background technology [0002] 1) Wireless sensor network [0003] The wireless sensor network integrates various technologies such as sensing, embedded computing, distributed information processing and wireless communication, and can collaboratively complete the distributed real-time information collection and processing of various monitored objects, and reliably transmit this information to the user. With the networking of computing and the development of technologies such as wireless communication, large-scale integrated circuits and micro-electromechanical...

Claims

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Application Information

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IPC IPC(8): H02J15/00H02N2/18G08C17/02H02M3/06H01L41/113
CPCY02B60/50
Inventor 杨涛杨黎明李磊民胡莉高杨韩宾何叶冯月晖刘婷婷谭先吉
Owner SOUTHWEAT UNIV OF SCI & TECH
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