Title :
A SiGe microbolometer interface for low-power microcontrolled applications
Author :
Fuentes, H. ; García-Romeo, D. ; Medrano, N. ; Calvo, B. ; Martínez, P.A. ; Gimeno, C. ; Sanz, M.T. ; Moreno, M. ; Torres, A.
Author_Institution :
Group of Electron. Design, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper presents a conditioning system for an amorphous silicon germanium (a-SiGe:H, B) microbolometer array for detection of heat sources in low-power sensing systems. It mainly consists of an amplification and switching circuit that adapts the small signal provided by the resistive microbolometer cell connected in a Wheatstone bridge to a voltage signal which can be easily read by a microcontroller. The low energy consumption of the proposed system makes it compatible with wireless sensor network applications.
Keywords :
Ge-Si alloys; amorphous semiconductors; amplification; bolometers; boron; computerised instrumentation; energy consumption; hydrogen; infrared detectors; microcontrollers; microsensors; wireless sensor networks; Wheatstone bridge; amplification; conditioning system; energy onsumption; heat source detection; microbolometer interface; microcontroller; resistive microbolometer cell; switching circuit; wireless sensor network; Batteries; Bolometers; Microcontrollers; Power demand; Temperature measurement; Wireless sensor networks; Microbolometer; Sensor interface; SiGe; smart sensor; wireless sensor networks;
Conference_Titel :
Circuits and Systems (LASCAS), 2012 IEEE Third Latin American Symposium on
Conference_Location :
Playa del Carmen
Print_ISBN :
978-1-4673-1207-3
DOI :
10.1109/LASCAS.2012.6180355
