Communication Power Supply for Wireless Network Sensors Based on Piezoelectric Transducer

Abstract

The invention discloses a wireless network sensor communication power supply based on piezoelectric energy conversion. The wireless network sensor communication power supply comprises a lower portion turnplate, a main shaft is fixed on the axis of the lower portion turnplate, a fan blade impeller is connected to the main shaft in a sleeved mode, a plurality of universal driving shafts are fixed on the lower end face of the fan blade impeller, two piezoelectric ceramic pieces are fixed on the lower portion turnplate, two strike transmission shafts are movably connected with the lower portion turnplate, and the two piezoelectric ceramic pieces are connected with a rectification energy storage and detection module. Wind blows the fan blade impeller and drives the strike transmission shafts to rotate through the universal driving shafts, and after the strike transmission shafts repeatedly strike the piezoelectric ceramic pieces, generated electric energy is connected to a circuit rectifying device through a wire. After rectification through the related rectifying device, the electric energy can be directly supplied to a wireless network sensor for use or charge a lithium battery. The wireless network sensor communication power supply can convert wind energy into the electric energy which can be directly provided for the wireless network sensor for use, and further corresponding electric energy can be stored in the lithium battery for long-term use of the wireless network sensor.

Description

technical field [0001] The invention relates to an energy supply device based on piezoelectric transformation, in particular to a communication power supply capable of supplying wireless network sensors. Background technique [0002] Wireless sensor network is a network composed of sensor nodes, and currently has good application prospects in many aspects such as medical care and environmental monitoring. With the continuous development of wireless networks, in many cases, we need to aggregate information from different regions to make a comprehensive judgment on the site conditions. Typically, in these cases, the sensors used to collect data are placed thousands of kilometers apart and need to perform continuous data detection for months or even years, and staff cannot perform maintenance frequently. In a wireless sensor network, each node can collect data independently and summarize the data. Depending on the application scale, the number of nodes can reach tens of thous...

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Problems solved by technology

[0004] In order to overcome the shortcomings of existing wireless network sensors that cannot obtain energy from the environment to work for a long time, this patent provides a new type of energy supply device for wireless network sensor nodes based on piezoelectric transformation. The wind energy and vibration energy near the deployment environment are converted into electrical energy for use by the sensor, and the piezoelectric transducer device can work without electromagnetic interference, reducing the possibility of system failure

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