Next Article in Journal
A Cardiac Early Warning System with Multi Channel SCG and ECG Monitoring for Mobile Health
Next Article in Special Issue
Zinc Oxide-Based Self-Powered Potentiometric Chemical Sensors for Biomolecules and Metal Ions
Previous Article in Journal
An Improved Approach for RSSI-Based only Calibration-Free Real-Time Indoor Localization on IEEE 802.11 and 802.15.4 Wireless Networks
Previous Article in Special Issue
Effect of the Matching Circuit on the Electromechanical Characteristics of Sandwiched Piezoelectric Transducers
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(4), 715; doi:10.3390/s17040715

A Self-Sustained Wireless Multi-Sensor Platform Integrated with Printable Organic Sensors for Indoor Environmental Monitoring

1
Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan
2
Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editors: Magnus Willander and Omer Nur
Received: 20 February 2017 / Revised: 23 March 2017 / Accepted: 25 March 2017 / Published: 29 March 2017
(This article belongs to the Special Issue Self-Powered Sensors)
View Full-Text   |   Download PDF [3642 KB, uploaded 29 March 2017]   |  

Abstract

A self-sustained multi-sensor platform for indoor environmental monitoring is proposed in this paper. To reduce the cost and power consumption of the sensing platform, in the developed platform, organic materials of PEDOT:PSS and PEDOT:PSS/EB-PANI are used as the sensing films for humidity and CO2 detection, respectively. Different from traditional gas sensors, these organic sensing films can operate at room temperature without heating processes or infrared transceivers so that the power consumption of the developed humidity and the CO2 sensors can be as low as 10 μW and 5 μW, respectively. To cooperate with these low-power sensors, a Complementary Metal-Oxide-Semiconductor (CMOS) system-on-chip (SoC) is designed to amplify and to read out multiple sensor signals with low power consumption. The developed SoC includes an analog-front-end interface circuit (AFE), an analog-to-digital convertor (ADC), a digital controller and a power management unit (PMU). Scheduled by the digital controller, the sensing circuits are power gated with a small duty-cycle to reduce the average power consumption to 3.2 μW. The designed PMU converts the power scavenged from a dye sensitized solar cell (DSSC) module into required supply voltages for SoC circuits operation under typical indoor illuminance conditions. To our knowledge, this is the first multiple environmental parameters (Temperature/CO2/Humidity) sensing platform that demonstrates a true self-powering functionality for long-term operations. View Full-Text
Keywords: self-sustained; printable organic sensors; sensing platform; SoC; power-gating self-sustained; printable organic sensors; sensing platform; SoC; power-gating
Figures

Figure 1

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).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wu, C.-C.; Chuang, W.-Y.; Wu, C.-D.; Su, Y.-C.; Huang, Y.-Y.; Huang, Y.-J.; Peng, S.-Y.; Yu, S.-A.; Lin, C.-T.; Lu, S.-S. A Self-Sustained Wireless Multi-Sensor Platform Integrated with Printable Organic Sensors for Indoor Environmental Monitoring. Sensors 2017, 17, 715.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top