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Sensors 2015, 15(9), 23126-23144; doi:10.3390/s150923126

Temperature and Humidity Sensor Powered by an Individual Microbial Fuel Cell in a Power Management System

1
College of Food Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
2
Department of Electrical Engineering, Huaqiao University, Xiamen 361021, China
3
Department of Electrical Engineering, Korea University, Seoul 361021, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Hung Cao
Received: 3 June 2015 / Revised: 1 September 2015 / Accepted: 3 September 2015 / Published: 11 September 2015
(This article belongs to the Special Issue Power Schemes for Biosensors and Biomedical Devices)
View Full-Text   |   Download PDF [623 KB, uploaded 11 September 2015]   |  

Abstract

Microbial fuel cells (MFCs) are of increasing interest as bioelectrochemical systems for decomposing organic materials and converting chemical energy into electricity. The main challenge for this technology is that the low power and voltage of the devices restricts the use of MFCs in practical applications. In this paper, a power management system (PMS) is developed to store the energy and export an increased voltage. The designed PMS successfully increases the low voltage generated by an individual MFC to a high potential of 5 V, capable of driving a wireless temperature and humidity sensor based on nRF24L01 data transmission modules. With the PMS, MFCs can intermittently power the sensor for data transmission to a remote receiver. It is concluded that even an individual MFC can supply the energy required to power the sensor and telemetry system with the designed PMS. The presented PMS can be widely used for unmanned environmental monitoring such as wild rivers, lakes, and adjacent water areas, and offers promise for further advances in MFC technology. View Full-Text
Keywords: microbial fuel cells (MFCs); power management system (PMS); sensors; charge pump; microcontroller unit (MCU); boost converter; DC-DC microbial fuel cells (MFCs); power management system (PMS); sensors; charge pump; microcontroller unit (MCU); boost converter; DC-DC
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zheng, Q.; Xiong, L.; Mo, B.; Lu, W.; Kim, S.; Wang, Z. Temperature and Humidity Sensor Powered by an Individual Microbial Fuel Cell in a Power Management System. Sensors 2015, 15, 23126-23144.

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