Detail publikace

Short range electromagnetic interface using 0.35 μm CMOS blocks for temperature monitoring in isolated areas

ŠOTNER, R. JEŘÁBEK, J. POLÁK, L. PROKOP, R. AYTEN, U. JAIKLA, W.

Originální název

Short range electromagnetic interface using 0.35 μm CMOS blocks for temperature monitoring in isolated areas

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Introduction: Infra-red (IR) and visible light (VL) based systems developed for transmission of information about physical quantities (e.g. humidity, temperature) out from closed areas, cannot be effectively employed in case of specific conditions in a targeted environment (because of fog or vapor for example). Objectives: In this work, we introduce a concept of wireless short-range transmitter and receiver to sense physical quantities, for instance temperature, with slow variation. The proposed concept is able to transmit analog-based information from isolated environments (e.g. aquariums or environments for plant growing) with high immunity against vapor and fog that limits standard optical (laser, IR band) methods of communication. Methods: In this work, a new concept of short range radiofrequency (RF) communication device consisting of transmitting and receiving parts build from active devices fabricated in 0.35 μm I3T25 3.3 V CMOS process and ferrite antennas is selected. RF part uses medium-wave propagation within 10 mm distance at frequency 700 kHz. Such an approach offers minimal path loss of the radiated energy of a signal and low-gain amplification required for restoration of similar levels as available at the transmitting side. Results: The processing of base-band signals of simple (sine wave) and complex (electrocardiogram) character was verified experimentally through the system. Application example of temperature monitoring in a closed environment, based on a temperature sensor (thermistor), verifies operationability in temperature range from 10 °C up to 50 °C. Conclusion: Compared to state-of-the-art solution, the presented concept has several advantages, for instance: less complexity; using of simpler type of modulation and demodulation; lower power consumption and significantly reduced issues caused by an environment with special transmission conditions (e.g. fog and vapor). The obtained results are in good agreement with expectations. Among others, the presented system brings beneficial performances for similar applications targeting on monitoring of low-frequency or slowly varying signals

Klíčová slova

Active elements; Amplitude modulation; ASIC; CMOS; Electronic adjustment; Medium radiofrequency wave; Temperature monitoring

Autoři

ŠOTNER, R.; JEŘÁBEK, J.; POLÁK, L.; PROKOP, R.; AYTEN, U.; JAIKLA, W.

Vydáno

5. 2. 2022

Nakladatel

Elsevier

Místo

AMSTERDAM, NETHERLANDS

ISSN

2090-1232

Periodikum

Journal of Advanced Research

Ročník

41

Číslo

11

Stát

Egyptská arabská republika

Strany od

49

Strany do

62

Strany počet

14

URL

https://www.sciencedirect.com/science/article/pii/S2090123222000182

Plný text v Digitální knihovně

http://hdl.handle.net/11012/204107

BibTex

@article{BUT177498,
  author="Roman {Šotner} and Jan {Jeřábek} and Ladislav {Polák} and Roman {Prokop} and Umut E. {Ayten} and Winai {Jaikla}",
  title="Short range electromagnetic interface using 0.35 μm CMOS blocks for temperature monitoring in isolated areas",
  journal="Journal of Advanced Research",
  year="2022",
  volume="41",
  number="11",
  pages="49--62",
  doi="10.1016/j.jare.2022.01.005",
  issn="2090-1232",
  url="https://www.sciencedirect.com/science/article/pii/S2090123222000182"
}