Energy Autonomous Sensors for Water Quality Monitoring

Manjakkal, Libu; Nikbakhtnasrabadi, Fatemeh; Dahiya, Ravinder

Abstract

This work is aimed to investigate conductivity and temperature of a solution by using energy autonomous thick film sensors. A RuO 2 based thick film electrode is fabricated for conductivity sensor and an interdigitated electrode with graphite sensitive electrode is used for temperature sensor. The operating range of 10-1000 μS/cm of the conductivity sensor shows its applicability in portable, tap and river water quality monitoring. The sensitivity of the temperature sensor in the range of 25-45°C is found to be 0.280/°C. For self-powered application, a hybrid integration of solar cell and flexible supercapacitor (SC) was successfully used. The performance of SC shows that at 0.5 rnA the SC can store an energy of 2μW/cm 2 with a power density of 0.05 mW/cm 2 , The charging of SC was carried out by using solar cell and the stored charge is used to operate conductivity and temperature sensors.

Citation

Manjakkal, L., Nikbakhtnasrabadi, F., & Dahiya, R. (2018, October). Energy Autonomous Sensors for Water Quality Monitoring. Presented at 2018 IEEE Sensors, New Delhi

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2018 IEEE Sensors
• Start Date: Oct 28, 2018
• End Date: Oct 31, 2018
• Acceptance Date: Dec 27, 2018
• Online Publication Date: Dec 27, 2018
• Publication Date: 2018-10
• Deposit Date: Jul 29, 2022
• Publisher: Institute of Electrical and Electronics Engineers
• DOI: https://doi.org/10.1109/icsens.2018.8589564
• Keywords: Water quality, Conductivity Sensors, Supercapacitor, energy autonomous System, Interdigitated electrode
• Public URL: http://researchrepository.napier.ac.uk/Output/2893195