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David Perez-Diaz-de-Cerio, Ángela Hernández-Solana, Antonio Valdovinos, Jose Luis Valenzuela
Timing points used in running races and other competition events are generally based on radio-frequency identification (RFID) technology. Athletes' times are calculated via passive RFID tags and reader kits. Specifically, the reader infrastructure needed is complex and requires the deployment of a mat or ramps which hide the receiver antennae under them. Moreover, with the employed tags, it is not possible to transmit additional and dynamic information such as pulse or oximetry monitoring, alarms, etc. In this paper we present a system based on two low complex schemes allowed in Bluetooth Low Energy (BLE): the non-connectable undirected advertisement process and a modified version of scannable undirected advertisement process using the new capabilities present in Bluetooth 5...
March 20, 2018: Sensors
Ying-Ren Chien, Yu-Xian Chen
This study designed a radio-frequency identification (RFID)-based Internet of Things (IoT) platform to create the core of a smart nest box. At the sensing level, we have deployed RFID-based sensors and egg detection sensors. A low-frequency RFID reader is installed in the bottom of the nest box and a foot ring RFID tag is worn on the leg of individual hens. The RFID-based sensors detect when a hen enters or exits the nest box. The egg-detection sensors are implemented with a resistance strain gauge pressure sensor, which weights the egg in the egg-collection tube...
March 14, 2018: Sensors
Yojiro Yutaka, Toshihiko Sato, Koichi Matsushita, Hiroyuki Aiba, Yusuke Muranishi, Yasuto Sakaguchi, Tadao Sugiura, Minoru Okada, Tatsuo Nakamura, Hiroshi Date
OBJECTIVE: We developed a novel localization technique for small intrapulmonary lesions using radiofrequency identification (RFID) technology. Micro-RFID markers with nickel-titanium coils were designed to be placed from subsegmental bronchi to the peripheral parenchyma. In this preclinical study, thoracoscopic subsegmentectomy of a canine pseudotumor model was performed to demonstrate the feasibility and three-dimensional positional accuracy of the system. METHODS: To recover subcentimeter pseudotumors, markers were bronchoscopically placed to determine the resection line: 1) next to the pseudotumor, 2) in the responsible subsegmental bronchi as the central margin, 3) on the intersubsegmental plane as the lateral margin...
March 9, 2018: Seminars in Thoracic and Cardiovascular Surgery
Yulu Fu, Changlong Wang, Ran Liu, Gaoli Liang, Hua Zhang, Shafiq Ur Rehman
RFID (Radio Frequency Identification) offers a way to identify objects without any contact. However, positioning accuracy is limited since RFID neither provides distance nor bearing information about the tag. This paper proposes a new and innovative approach for the localization of moving object using a particle filter by incorporating RFID phase and laser-based clustering from 2d laser range data. First of all, we calculate phase-based velocity of the moving object based on RFID phase difference. Meanwhile, we separate laser range data into different clusters, and compute the distance-based velocity and moving direction of these clusters...
March 9, 2018: Sensors
C Álvarez, J Colón, A C Lópes, M Fernández-Polanco, H Benbelkacem, P Buffière
One of the main problems of dry anaerobic digestion plants treating urban solid waste is the loss of useful volume by the sedimentation of solids (inerts) into the bottom of the digester, or by accumulation of floating materials in its upper part. This entails a periodic cost of emptying and cleaning the digesters, a decrease in biogas production and complications in maintenance. Usually the sedimentation is a consequence of the heterogeneity of waste that, in addition to organic matter, drags particles of high density that end up obstructing the digesters...
March 5, 2018: Waste Management
He Xu, Jie Ding, Peng Li, Feng Zhu, Ruchuan Wang
With the fast development of the Internet of Things, Radio Frequency Identification (RFID) has been widely applied into many areas. Nevertheless, security problems of the RFID technology are also gradually exposed, when it provides life convenience. In particular, the appearance of a large number of fake and counterfeit goods has caused massive loss for both producers and customers, for which the clone tag is a serious security threat. If attackers acquire the complete information of a tag, they can then obtain the unique identifier of the tag by some technological means...
March 2, 2018: Sensors
Jie Mei, Nico Riedel, Ulrike Grittner, Matthias Endres, Stefanie Banneke, Julius Valentin Emmrich
Body temperature is a valuable parameter in determining the wellbeing of laboratory animals. However, using body temperature to refine humane endpoints during acute illness generally lacks comprehensiveness and exposes to inter-observer bias. Here we compared two methods to assess body temperature in mice, namely implanted radio frequency identification (RFID) temperature transponders (method 1) to non-contact infrared thermometry (method 2) in 435 mice for up to 7 days during normothermia and lipopolysaccharide (LPS) endotoxin-induced hypothermia...
February 23, 2018: Scientific Reports
Lisa C Barry, Laura Hatchman, Zhaoyan Fan, Jack M Guralnik, Robert X Gao, George A Kuchel
OBJECTIVES: To evaluate the feasibility, acceptability, and validity of a radio-frequency identification (RFID)-based system to measure gait speed in a clinical setting as a first step to using unobtrusive gait speed assessment in routine clinical care. DESIGN: Feasibility study comparing gait speed assessed using an RFID-based system with gait speed assessed using handheld stopwatch, the criterion standard. SETTING: Outpatient geriatrics clinic at a Connecticut-based academic medical center...
February 23, 2018: Journal of the American Geriatrics Society
Mark W Hamm, Samuel V Calabrese, Scott J Knoer, Ashley M Duty
PURPOSE: The development of a Web-based program to track and manage emergency medications with radio frequency identification (RFID) is described. SUMMARY: At the Cleveland Clinic, medication kit restocking records and dispense locations were historically documented using a paper record-keeping system. The Cleveland Clinic investigated options to replace the paper-based tracking logs with a Web-based program that could track the real-time location and inventory of emergency medication kits...
March 1, 2018: American Journal of Health-system Pharmacy: AJHP
Sérgio Francisco Pichorim, Nathan J Gomes, John C Batchelor
Two solutions for UHF RFID tags for soil moisture sensing were designed and are described in this paper. In the first, two conventional tags (standard transponders) are employed: one, placed close to the soil surface, is the sensor tag, while the other, separated from the soil, is the reference for system calibration. By transmission power ramps, the tag's turn-on power levels are measured and correlated with soil condition (dry or wet). In the second solution, the SL900A chip, which supports up to two external sensors and an internal temperature sensor, is used...
February 3, 2018: Sensors
Peio Lopez-Iturri, Erik Aguirre, Jesús Daniel Trigo, José Javier Astrain, Leyre Azpilicueta, Luis Serrano, Jesús Villadangos, Francisco Falcone
In the context of hospital management and operation, Intensive Care Units (ICU) are one of the most challenging in terms of time responsiveness and criticality, in which adequate resource management and signal processing play a key role in overall system performance. In this work, a context aware Intensive Care Unit is implemented and analyzed to provide scalable signal acquisition capabilities, as well as to provide tracking and access control. Wireless channel analysis is performed by means of hybrid optimized 3D Ray Launching deterministic simulation to assess potential interference impact as well as to provide required coverage/capacity thresholds for employed transceivers...
January 29, 2018: Sensors
A L Barnes, S L Wickham, R Admiraal, D W Miller, T Collins, C Stockman, P A Fleming
The feeding and drinking behaviour of sheep was monitored using RFID technology at a commercial pre-embarkation feedlot in Western Australia with the aim of characterising feeding and drinking patterns of inappetent sheep that might allow them to be treated. Feeding and drinking behaviour of sheep were compared with their survival and change in body condition. Patterns of number of visits and the time spent at feed and water troughs were analysed for a total of 8,206 sheep, representing four consignments that were monitored for a range of 6-31 d...
January 25, 2018: Journal of Animal Science
Fernando Seco, Antonio R Jiménez
In GPS-denied indoor environments, localization and tracking of people can be achieved with a mobile device such as a smartphone by processing the received signal strength (RSS) of RF signals emitted from known location beacons (anchor nodes), combined with Pedestrian Dead Reckoning (PDR) estimates of the user motion. An enhacement of this localization technique is feasible if the users themselves carry additional RF emitters (mobile nodes), and the cooperative position estimates of a group of persons incorporate the RSS measurements exchanged between users...
January 18, 2018: Sensors
Fei Lu, Haixing Wang, Yanjie Guo, Qiulin Tan, Wendong Zhang, Jijun Xiong
A wireless and passive temperature sensor operating up to 800 °C is proposed. The sensor is based on microwave backscatter RFID (radio frequency identification) technology. A thin-film planar structure and simple working principle make the sensor easy to operate under high temperature. In this paper, the proposed high temperature sensor was designed, fabricated, and characterized. Here the 99% alumina ceramic with a dimension of 40 mm × 40 mm × 1 mm was prepared in micromechanics for fabrication of the sensor substrate...
January 16, 2018: Sensors
Xia Cao, Meng Zhang, Jinrong Huang, Tao Jiang, Jingdian Zou, Ning Wang, Zhong Lin Wang
Wireless power delivery has been a dream technology for applications in medical science, security, radio frequency identification (RFID), and the internet of things, and is usually based on induction coils and/or antenna. Here, a new approach is demonstrated for wireless power delivery by using the Maxwell's displacement current generated by an electrodeless triboelectric nanogenerator (TENG) that directly harvests ambient mechanical energy. A rotary electrodeless TENG is fabricated using the contact and sliding mode with a segmented structure...
January 5, 2018: Advanced Materials
Xianjun Huang, Ting Leng, Thanasis Georgiou, Jijo Abraham, Rahul Raveendran Nair, Kostya S Novoselov, Zhirun Hu
In this work, the relative dielectric permittivity of graphene oxide (GO), both its real and imaginary parts, have been measured under various humidity conditions at GHz. It is demonstrated that the relative dielectric permittivity increases with increasing humidity due to water uptake. This finding is very different to that at a couple of MHz or lower frequency, where the relative dielectric permittivity increases with decreasing humidity. This GO electrical property was used to create a battery-free wireless radio-frequency identification (RFID) humidity sensor by coating printed graphene antenna with the GO layer...
January 8, 2018: Scientific Reports
Iraj Asgharzadeh-Karamshahloo, Armin Jabbarzadeh, Saeed Shavvalpour
OBJECTIVES: This research assesses the use of Radio Frequency Identification (RFID) technologies as an alternative for insurance costs in hospitals. METHODS: Despite the advantages of RFID, this technology has not been applied in most hospitals due to implementation costs and amortization of RFID. In this paper, we intend to model the total profit of hospitals in three scenarios namely, application of RFID technology in the hospital, without applying RFID technology in the hospital and insuring patients and equipment in the hospital...
December 15, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
Qijun Zhang, Lin Wu, Xiaozhen Fang, Mingyue Liu, Jing Zhang, Min Shao, Sihua Lu, Hongjun Mao
In order to obtain VOCs emission characteristics and emission factors from vehicle, a tunnel experiment was conducted in the Fu Gui Mountain Tunnel in Nanjing, China. The tunnel is located in the middle of city, with total length of 480m and speed limit of 50km/h. The studied vehicle fleet was composed of 87% light duty vehicles and 13% heavy duty vehicles (liquefied natural gas bus, LNGB). The emerging radio frequency identification (RFID) technology was used to divide fine vehicles type including China I, China II, China III, China IV, China V and LNGB...
December 21, 2017: Science of the Total Environment
Zongguo Wen, Shuhan Hu, Djavan De Clercq, M Bruce Beck, Hua Zhang, Huanan Zhang, Fan Fei, Jianguo Liu
Catering companies around the world generate tremendous amounts of waste; those in China are no exception. The paper discusses the design, implementation, and evaluation of a sensor-based Internet of Things (IoT) network technology for improving the management of restaurant food waste (RFW) in the city of Suzhou, China. This IoT-based system encompasses the generation, collection, transportation and final disposal of RFW. The Suzhou case study comprised four steps: (1) examination of the required functionality of an IoT-enabled system in the specific context of Suzhou; (2) configuration of the system architecture, both software and hardware components, according to the identified functionality; (3) installation of the components of the IoT system at the facilities of the stakeholders across the RFW generation-collection-transportation-disposal value chain; and (4) evaluation of the performance of the entire system, based on data from three years of operation...
December 11, 2017: Waste Management
Shuangxi Zhou, Wei Sheng, Fangming Deng, Xiang Wu, Zhihui Fu
In this paper, a novel approach for concrete chloride ion concentration measuring based on passive and wireless sensor tag is proposed. The chloride ion sensor based on RFID communication protocol is consisting of an energy harvesting and management circuit, a low dropout voltage regulator, a MCU, a RFID tag chip and a pair of electrodes. The proposed sensor harvests energy radiated by the RFID reader to power its circuitry. To improve the stability of power supply, a three-stage boost rectifier is customized to rectify the harvested power into dc power and step-up the voltage...
December 11, 2017: Sensors
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