Wireless Saw-Based Tags with Temperature Sensors that Utilize High-Resolution Delay-Time Measurements

2016 ◽  
Vol 32 (4) ◽  
pp. 435-440 ◽  
Author(s):  
J.-H. Sun ◽  
C.-C. Lin
Keyword(s):  
High Resolution ◽  
Radio Frequency Identification ◽  
Delay Time ◽  
Temperature Sensors ◽  
Harsh Environments ◽  
Rfid Tags ◽  
Rfid Tag ◽  
Saw Devices ◽  
Signal Processing Method ◽  
Frequency Identification

AbstractSurface acoustic wave (SAW) devices are widely used in commercial products as filters and resonators. SAW devices are also applied as passive, wireless radio frequency identification (RFID) tags and sensors, which can be used in harsh environments and consume no batteries. In this study, we designed and fabricated an SAW-based RFID tag with the added function of a high-resolution temperature sensor. A coupling of modes model was adopted to design 433MHz SAW-based tags/sensors. An improved signal processing method was used to increase the resolution of time-domain signals, enabling the slight change of delay time caused by temperature variation to be detected. Subsequently, the SAW tags/sensors were fabricated on 128° Y-cut lithium niobate and used to detect temperature shifts. The results revealed that high-resolution delay-time SAW devices are feasible for measuring temperatures precisely and can be applied to other SAW-based sensors.

Adaptive Framework for Collisions in RFID Tag Identification

2008 ◽  
Vol 07 (01) ◽  
pp. 9-14 ◽  
Author(s):  
Selwyn Piramuthu
Keyword(s):  
Supply Chain ◽  
Radio Frequency Identification ◽  
Rfid Tags ◽  
Tag Identification ◽  
Seamless Integration ◽  
Essential Information ◽  
Rfid Tag ◽  
Frequency Identification ◽  
Pass Through ◽  
Aloha Protocol

Radio Frequency Identification (RFID) is promising, as a technique, to enable tracking of essential information about objects as they pass through supply chains. Information thus tracked can be utilised to efficiently operate the supply chain. Effective management of the supply chain translates to huge competitive advantage for the firms involved. Among several issues that impede seamless integration of RFID tags in a supply chain, one of the problems encountered while reading RFID tags is that of collision, which occurs when multiple tags transmit data to the same receiver slot. Data loss due to collision necessitates re-transmission of lost data. We consider this problem when Framed Slotted ALOHA protocol is used. Using machine learning, we adaptively configure the number of slots per frame to reduce the number of collisions while improving throughput.

scholarly journals Printable Stretchable Silver Ink and Application to Printed RFID Tags for Wearable Electronics

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3036 ◽  
Author(s):  
Tao Zhong ◽  
Ning Jin ◽  
Wei Yuan ◽  
Chunshan Zhou ◽  
Weibing Gu ◽  
...  
Keyword(s):  
Radio Frequency Identification ◽  
High Performance ◽  
Rfid Tags ◽  
Wearable Electronics ◽  
Rfid Tag ◽  
Silver Ink ◽  
Bulk Silver ◽  
Endurance Tests ◽  
Frequency Identification ◽  
Small Cracks

A printable elastic silver ink has been developed, which was made of silver flakes, dispersant, and a fluorine rubber and could be sintered at a low temperature. The printed elastic conductors showed low resistivity at 21 μΩ·cm, which is about 13.2 times of bulk silver (1.59 μΩ·cm). Their mechanical properties were investigated by bending, stretching, and cyclic endurance tests. It was found that upon stretching the resistance of printed conductors increased due to deformation and small cracks appeared in the conductor, but was almost reversible when the strain was removed, and the recovery of conductivity was found to be time dependent. Radio-frequency identification (RFID) tags were fabricated by screen printing the stretchable silver ink on a stretchable fabric (lycra). High performance of tag was maintained even with 1000 cycles of stretching. As a practical example of wearable electronics, an RFID tag was printed directly onto a T-shirt, which demonstrated its normal working order in a wearing state.

scholarly journals Miniaturized Chipless RFID Tags Based on Periodically Loaded Microstrip Structure

2019 ◽  
Vol 9 (5) ◽  
pp. 4679-4684
Author(s):  
M. Added ◽  
K. Rabaani ◽  
S. Chabaan ◽  
N. Boulejfen
Keyword(s):  
Radio Frequency Identification ◽  
Low Cost ◽  
Resonant Circuit ◽  
Rfid Tags ◽  
Frequency Range ◽  
Rfid Tag ◽  
Chipless Rfid ◽  
Frequency Identification ◽  
Coding Capacity ◽  
Microstrip Structure

A compact chipless radio frequency identification (RFID) tag-based on slow-wave technology is introduced in this paper. The tag consists of a resonant circuit based on open stub resonators periodically loaded by shunt stubs allowing a coding capacity of 9 bits and operating in a frequency range from 2 to 4GHz. The receiving and transmitting antennas of the tag are particularly designed to minimize the tag size as much as possible. The proposed tag presents a robust bit pattern with a compact and fully printable structure using FR4 substrate for a low-cost tag.

scholarly journals Stretchable Textile Yarn Based on UHF RFID Helical Tag

Textiles ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 547-557
Author(s):  
Sofia Benouakta ◽  
Florin Doru Hutu ◽  
Yvan Duroc
Keyword(s):  
Radio Frequency Identification ◽  
Textile Yarn ◽  
Radiative Properties ◽  
Rfid Tags ◽  
Uhf Rfid ◽  
Rfid Tag ◽  
Half Wave ◽  
Present Solution ◽  
Frequency Identification ◽  
Helical Geometry

In the context of wearable technology, several techniques have been used for the fabrication of radio frequency identification (RFID) tags such as 3D printing, inkjet printing, and even embroidery. In contrast to these methods where the tag is attached to the object by using sewing or simple sticking, the E-Thread® technology is a novel assembling method allowing for the integration of the RFID tag into a textile yarn and thus makes it embeddable into the object at the fabrication stage. The current E-Thread® yarn uses a RFID tag in which the antenna is a straight half-wave dipole that makes the solution vulnerable to mechanical strains (i.e., elongation). In this paper, we propose an alternative to the current RFID yarn solution with the use of an antenna having a helical geometry that answers to the mechanical issues and keeps quite similar electrical and radiative properties with respect to the present solution. The RFID helical tag was designed and simulated taking into consideration the constraints of the manufacturing process. The helical RFID tag was then fabricated using the E-Thread® technology and experimental characterization showed that the obtained structure exhibited good performance with 10.6 m of read range in the ultra high frequency (UHF) RFID band and 10% of tolerance in terms of elongation.

LOCATION ESTIMATION OF MOBILE SYSTEMS USING PASSIVE RFID TAGS IN AN INDOOR ENVIRONMENT

2009 ◽  
Vol 20 (04) ◽  
pp. 619-632
Author(s):  
JAHNG HYON PARK ◽  
YONG-KWAN JI
Keyword(s):  
Radio Frequency Identification ◽  
Indoor Environment ◽  
Location Estimation ◽  
Mobile Systems ◽  
Estimation Methods ◽  
Rfid Tags ◽  
Mobile System ◽  
Rfid Tag ◽  
Frequency Identification ◽  
Passive Rfid

This paper presents methods of localization of mobile systems using recent Radio Frequency Identification (RFID) technology. We consider an indoor environment where RFID tags are implanted along the wall or in objects in the room. If the absolute position and orientation of a tag are read by an RF reader, a mobile system can estimate its location using the information saved in the tags. A reader-tag model is obtained through experiments in order to derive relative positions and orientations between an antenna and an RFID tag. To estimate the location, we propose two estimation methods. One uses a single RFID tag and the other uses multi-RFID tags. Experimental results show that the proposed methods can provide good performance for mobile system localization in an indoor environment.

scholarly journals Brush-Painting and Photonic Sintering of Copper Oxide and Silver Inks on Wood and Cardboard Substrates to Form Antennas for UHF RFID Tags

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Erja Sipilä ◽  
Johanna Virkki ◽  
Jianhua Wang ◽  
Lauri Sydänheimo ◽  
Leena Ukkonen
Keyword(s):  
Copper Oxide ◽  
Radio Frequency Identification ◽  
Rfid Tags ◽  
Uhf Rfid ◽  
Rfid Tag ◽  
Wireless Testing ◽  
Silver Ink ◽  
Frequency Identification ◽  
Remote Identification ◽  
Photonic Sintering

Additive deposition of inks with metallic inclusions provides compelling means to embed electronics into versatile structures. The need to integrate electronics into environmentally friendly components and structures increases dramatically together with the increasing popularity of the Internet of Things. We demonstrate a novel brush-painting method for depositing copper oxide and silver inks directly on wood and cardboard substrates and discuss the optimization of the photonic sintering process parameters for both materials. The optimized parameters were utilized to manufacture passive ultra high frequency (UHF) radio frequency identification (RFID) tag antennas. The results from wireless testing show that the RFID tags based on the copper oxide and silver ink antennas on wood substrate are readable from ranges of 8.5 and 11 meters, respectively, and on cardboard substrate from read ranges of 8.5 and 12 meters, respectively. These results are well sufficient for many future wireless applications requiring remote identification with RFID.

scholarly journals Three-Wheeled Omnidirectional Robot Localization in RFID-Tag Environments using UFIR Filtering

2021 ◽  
Vol 17 ◽  
pp. 16-21
Author(s):  
Jorge A. Ortega-Contreras ◽  
Yuriy S. Shmaliy ◽  
Jose A. Andrade-Lucio
Keyword(s):  
Radio Frequency Identification ◽  
Finite Impulse Response ◽  
Indoor Navigation ◽  
Measurement Noise ◽  
Rfid Tags ◽  
Robot Localization ◽  
Rfid Technology ◽  
Localization Accuracy ◽  
Rfid Tag ◽  
Frequency Identification

This paper describes a way to improve the indoor navigation of mobile robots using radio frequency identification (RFID) technology. A net of RFID tags is deployed in the navigation space. A measurement system measures distances from the tags to the robot with in the presence of the firstorder Markov-Gauss colored measurement noise (CMN) and is combined with a digital gyroscope to measure the robot heading. To increase the localization accuracy, the Kalman filter (KF) and unbiased finite impulse response (UFIR) modified for CMN are used. It is shown that the navigation system developed is more accurate than the basic one employing the standard KF and UFIR filter

scholarly journals Applying Radio Frequency Identification Technology in Banking System

2019 ◽  
Vol 54 (3) ◽  
Author(s):  
Reem Hazim ◽  
Ahmed N. Rashid
Keyword(s):  
Waiting Time ◽  
Radio Frequency Identification ◽  
Banking System ◽  
Rfid Tags ◽  
Rfid Technology ◽  
Rfid Tag ◽  
Identification Card ◽  
Frequency Identification ◽  
Identification Of Persons ◽  
Modern Technologies

An RFID technology facilitates the work of different industries, it's used widely in many applications, like in the banking system. Banks are trying to give better services to their customers by using modern technologies. This paper presents the identification of persons (customers, employees) in a BANK and to utilize the simulation of this technology in order to make an electronic banking system more useful. Our system splits into two parts. The first is concerned about the customer by giving RFID tag attached to a checkbook, the second part is concerned about the employees by giving RFID tags attached to Identification Card (IDC). These tags are scanned by readers when entering the bank and processing of their information is performed in order to identify, track, monitor, verify, and give more satisfying services to customers such as reduction of waiting time, ability to bring security, accuracy and integrity of the banking systems of the country by accelerating most of the banking works by using electronic infrastructures without disturbance for special customers.

Improved Estimation of Ship Construction Completion by RFID Tags

2013 ◽  
Author(s):  
Robert Latorre ◽  
Joe Comer ◽  
Altug Basaran ◽  
Josh Trippi
Keyword(s):  
Radio Frequency Identification ◽  
Rfid Tags ◽  
Production Schedule ◽  
Bar Code ◽  
Rfid Tag ◽  
Bar Codes ◽  
Production Problem ◽  
Frequency Identification ◽  
Radio Frequency Identification Device ◽  
D Model

This paper presents the extension of the 3-D model to the production problem of estimating construction completion. This has several benefits: 1 Timely billing for work completed. 2 Daily updates on construction completion/progress. 3 Improved material and manpower utilization from an accurate tracking of production schedule. Connecting the digital 3-D model to the as build structure requires introducing bar code labels and Radio Frequency Identification Device (RFID) tags and readers. The paper discusses many aspects of RFID tag selection and applications. The paper closes with a discussion of how the bar codes and RFID tags can be used to improve the shipbuilding progress payment. By this improvement, the modest cost of the tags and readers can be easily recovered.

Embedded Electronics and Their effect on Wet Layup Substrates

2018 ◽  
Vol 1 (03) ◽  
Author(s):  
Billy Gray
Keyword(s):  
Shear Strength ◽  
Radio Frequency Identification ◽  
Shear Test ◽  
Interlaminar Shear Strength ◽  
Rfid Tags ◽  
Rfid Tag ◽  
Kevlar Fiber ◽  
Embedded Electronics ◽  
Frequency Identification ◽  
Interlaminar Shear

In this paper, Commercial of the Shelf (COTS) Radio Frequency Identification (RFID) tags are embedded into Kevlar fiber reinforced epoxy (KFRP). The purpose was to determine if the RFID tags would survive the manufacturing process for the KFRP and to determine the mechanical impact of the RFID tag on the KFRP’s structure. All materials were manufactured using a hand layup method and tested for electronic read distance and mechanical integrity. Subsets of the material were tested using compression testing to determine if the inclusion of the RFID tag caused a defect in the KFRP while other sets of the material were tested using a three point shear test to see how the inclusion of the RFID tag affected the interlaminar shear strength of the KFRP. The concluded results showed that the read distances were negatively affected by the Kevlar and that the compression and shear strengths of the material were also affected by the RFID tags.

Sign in / Sign up

Export Citation Format

Share Document