Autonomous sensor-transponder RFID with supply energy conditioning for object navigation systems

Skoczylas, M.; Kamuda, K.; Jankowski-Mihułowicz, Piotr; Kalita, W.; Węglarski, Mariusz

doi:10.1117/12.2074208

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…One of a few such products is the AMS SL900A chip designed to operate in semi-passive transponders (although it can also work in passive mode) which is equipped with additional functions and extended user memory. A problem with designing a supplying unit that works effectively at a very low level of voltage generated at antenna terminals is also the important challenge [28] (Section 4). The best case would be if this block was supported by additional energy storage (e.g., supercapacitor) as well as an appropriate management algorithm of device activity to ensure its stable operation in a weak electromagnetic field.…”

Section: Development Board Of Autonomous Rfid Sensormentioning

confidence: 99%

“…Aspects related to designing energy-saving microprocessor systems with data acquisition functions in battery-free quasi-autonomous RFID sensors of the HF band can be found in [28]. The problems concerning the design of the supply circuit (T1, T2 and T3, Figure 7) that gathers, processes and stores energy derived by the internal harvester of the RFID chip as well as the possibility of providing conditioned energy on the external output V OUT is discussed by the authors in this paper.…”

Section: Energy Harvesting In Autonomous Rfid Sensorsmentioning

confidence: 99%

“…When considering semi-autonomous mode of the sensing node, beside the energy storage the time markers for measuring samples have to be also predicted in designing concept of supplying block. Based on conducted analysis of energy balances for several different constructions, a system with an external real time clock (RTC) having the power management function seems to be the best choice [28]. However, RTC blocks can be found on typical microcontrollers but when it is used the energy consumption is higher.…”

Section: Energy Harvesting In Autonomous Rfid Sensorsmentioning

confidence: 99%

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Factors Affecting the Synthesis of Autonomous Sensors with RFID Interface

Węglarski

Jankowski-Mihułowicz

2019

Sensors

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A general view on the problem of designing atypical battery-free, autonomous semi-passive RFID transponders-sensors (autonomous sensors with RFID interfaces) is presented in this review. Although RFID devices can be created in any of the electronic technologies, the design stage must be repeated each time when the manufacturing processes are changed, and their specific conditions have to be taken into consideration when modeling new solutions. Aspects related to the factors affecting the synthesis of semi-passive RFID transponder components on the basis of which the idea of the autonomous RFID sensor was developed are reflected in the paper. Besides their general characteristics, the operation conditions of modern RFID systems and achievements in autonomous RFID sensor technology are revealed in subsequent sections—they include such issues as technological aspects of the synthesis process, designing antennas for RFID transponders, determining RFID chip and antenna parameters, creating the interrogation zone IZ, etc. It should be pointed that the universal construction of an autonomous RFID sensor, which could be use in any application of the automatic object identification system, cannot be developed according to the current state of the art. Moreover, a trial and error method is the most commonly used in the today’s process of designing new solutions, and the basic parameters are estimated on the basis of the tests and the research team experience. Therefore, it is necessary to look for new inventions and methods in order to improve implementations of RFID systems.

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Section: Development Board Of Autonomous Rfid Sensormentioning

confidence: 99%

Section: Energy Harvesting In Autonomous Rfid Sensorsmentioning

confidence: 99%

Section: Energy Harvesting In Autonomous Rfid Sensorsmentioning

confidence: 99%

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Factors Affecting the Synthesis of Autonomous Sensors with RFID Interface

Węglarski

Jankowski-Mihułowicz

2019

Sensors

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“…Radio frequency identification (RFID) is a one of the most important automatic identification technologies which has become more and more popular in the past few years. So far, it has found application in many different fields, such as supply chain management, logistics, inventory control and brand protection (Periyasamy and Dhanasekaran, 2014;Jankowski-Mihułowicz et al, 2015;Skoczylas et al, 2014;Chen et al, 2015;Anssens et al, 2011;Janeczek et al, 2015;Boaventura and Carvalho, 2013).…”

Section: Introductionmentioning

confidence: 99%

Printed HF antennas for RFID on-metal transponders

et al. 2016

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Purpose – The purpose of this paper is to investigate screen-printed high-frequency (HF) antennas for radio frequency identification (RFID) on-metal transponders in which a magnetic sheet was used as a substrate material. Design/methodology/approach – A transponder antenna was designed in the form of square coil using a high-frequency electromagnetic software. Then, the antenna was fabricated with screen printing technique on two different magnetic sheets (RFN4 and RFN7) and on polyethylene naphthalate (PEN) foil for comparison. Its printing was carried out with polymer pastes based on silver flakes (PM-406 and SF). Thickness, track width and spacing were examined for the antennas using digital microscope and contact profilometer. Resistance and inductance were also measured, and resonant frequency, quality factor and target values of capacitance to achieve resonant frequency of the tested antenna at 13.56 MHz were calculated. Finally, RFID chips were mounted to the prepared antennas using an isotropic conductive adhesive, and a maximum read distance was measured with a reader installed in a smartphone. Findings – It was found that an antenna thickness on the magnetic sheets used was higher than on PEN foil. At the same time, surface roughness of the fabricated antennas on these sheets was revealed to be higher as well. Inductance of the measured antennas exhibited good conformity with the antenna design, but higher divergence was noticed in the measured resistance. Its lowest value was achieved when the antenna was printed with the paste PM-406 on PEN foil and the highest one when it was fabricated with the paste SF on the same substrate. This suggests that high attention needs to be paid to a polymer paste selected for antenna printing. The performed tests showed that the magnetic sheet RFN4 seems to be better substrate for on-metal transponders compared to RFN7 due to lower resistance and higher quality factor of the prepared antennas. Research limitations/implications – Further investigations are required to examine mechanical and thermal durability of the HF antennas printed on the magnetic sheets. Practical implications – The investigated HF antennas fabricated on magnetic sheets can find application in near field communication (NFC) transponders designed to be placed on metallic surfaces, e.g. on frames of advertising screens. Originality/value – Influence of used magnetic sheets and polymer pastes on geometry and electrical properties of HF antennas for RFID on-metal transponders was investigated. The presented investigations can be interesting for NFC/RFID designers who are involved in designing systems suitable for metallic surfaces.

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