A Wind Energy Powered Wireless Temperature Sensor Node

Sensors

Chuang Zhang¹  Xue-Feng He¹  Si-Yu Li¹  Yao-Qing Cheng²  Yang Rao¹ 

[1] Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, Chongqing University, Chongqing 400044, China; E-Mails:;Microsystem Research Center, Chongqing University, Chongqing 400044, China; E-Mail:

关键词: wireless sensor node;    temperature;    energy harvesting;    wind-induced vibration;    piezoelectricity;   

DOI  :  10.3390/s150305020

来源: mdpi

【 摘 要 】

A wireless temperature sensor node composed of a piezoelectric wind energy harvester, a temperature sensor, a microcontroller, a power management circuit and a wireless transmitting module was developed. The wind-induced vibration energy harvester with a cuboid chamber of 62 mm × 19.6 mm × 10 mm converts ambient wind energy into electrical energy to power the sensor node. A TMP102 temperature sensor and the MSP430 microcontroller are used to measure the temperature. The power management module consists of LTC3588-1 and LT3009 units. The measured temperature is transmitted by the nRF24l01 transceiver. Experimental results show that the critical wind speed of the harvester was about 5.4m/s and the output power of the harvester was about 1.59 mW for the electrical load of 20 kΩ at wind speed of 11.2m/s, which was sufficient to power the wireless sensor node to measure and transmit the temperature every 13 s. When the wind speed increased from 6 m/s to 11.5m/s, the self-powered wireless sensor node worked normally.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.