Publicado em: 02/09/2024

IEEE CASS RS Talks 2024

CASS Talks: Integrated Interface Circuits for MEMS Contact-less Temperature Sensors

No dia 6 de setembro de 2024, às 13:30 (Horário de Brasília, GMT-3), ocorrerá a palestra “Integrated Interface Circuits for MEMS Contact-less Temperature Sensors”, como parte do IEEE CASS RS Talks 2024. Ministrada pela Dr. Elisabetta Moisello, da University of Pavia, Itália, a palestra discutirá os avanços em circuitos integrados de interface para sensores de temperatura sem contato baseados em MEMS.

A palestra será transmitida ao vivo pelo YouTube, no canal oficial do IEEE CASS.

Abstract:
Thermal sensors, exploiting the relation between the thermal radiation emitted by an object and its temperature, allow realizing contact-less temperature measurements, required in a wide range of applications, ranging from fever measurements to presence detection for security and climate control systems. With the advent of smart homes and Internet of Things (IoT) and the wide spreading of mobile and wearable devices, the need for low-cost low-power thermal sensors has arisen, therefore moving the focus of the research away from standard bolometers and pyroelectric detectors and towards uncooled infrared (IR) sensors solutions that can be easily integrated. Bolometers and pyroelectric detectors, which are the main types of thermal sensors found nowadays on the market, in fact, do not comply with the low-cost and easy integration specifications. Integration of thermal sensors is possible through Micro-Electro Mechanical Systems (MEMS) technology, which allows combining on the same substrate or chip both electrical and mechanical structures with dimensions in the micrometer range, thus providing structures with high thermal isolation and low thermal mass. In this talk, two different MEMS thermal sensors, which fulfill the desired low-cost low-power specifications, while also being compatible with CMOS processes and thus easily integrated, are considered: a polysilicon thermopile and a micromachined CMOS transistors (TMOS). This talk will highlight the advantages and drawbacks of both sensor solutions and present the design of the interface circuits for the considered sensors, illustrating two different circuit architectures, their principle of operation, and their experimental verification as stand-alone circuits and as part of an overall system together with the sensor they were designed for.

Short CV:
Elisabetta Moisello was born in Pavia, Italy, in 1993. In 2017 and 2020, respectively, she received the Master’s degree (summa cum laude) in electronic engineering and the Ph.D. in microelectronics from the University of Pavia, where she is currently a postdoctoral research fellow and contract professor. Her research topics include sensor interface circuits, switching dc-dc converters and wireless power transfer. She has been and still is part of the Organizing Committee of the PRIME Conference and has served on the Technical Program Committees of several International Conferences (PRIME, ICECS and NEWCAS). She is an Associate Editor for IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS—PART II: EXPRESS BRIEFS (TCAS-II). She is an IEEE and CASS member, and she is currently serving on the CASS Board of Governors as Young Professional representative.