Application of a Low-Cost Strain Monitoring System Based on Internet of Things to the Structural Analysis of Physical Models

2019 ◽  
Vol 887 ◽  
pp. 633-640
Author(s):  
Enrique Gil ◽  
Fernando Gómez ◽  
Ángeles Mas ◽  
Jose Vercher ◽  
Carlos Lerma ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Structural Engineering ◽  
Low Cost ◽  
Minimum Cost ◽  
Great Accuracy ◽  
Physical Models ◽  
Cost System ◽  
Strain Monitoring ◽  
Reference Device ◽  
User Friendly

A reasonably accurate, low-cost system for the monitoring of strains in simple physical models within the field of Structural Engineering, based on Internet of Things, is presented, calibrated and discussed. The system only requires average, economic devices as Arduino microcontroller and strain gauges. Several tests on a case study of a scaled-cantilevered aluminium beam with different loading are conducted. Governing parameters are calibrated aimed at an optimization when benchmarked against theoretical and experimental results obtained with a reference device. Results show great accuracy; however, the need of setting of the parameters campaign-by-campaign, especially aimed at dealing with thermal drift, becomes a shortcoming. Still, its minimum cost and user-friendly management makes it a suitable solution for different applications.

DXS: Differential absorption x-ray spectroscopy

1992 ◽  
Vol 50 (2) ◽  
pp. 1738-1739
Author(s):  
Robert M. Fisher
Keyword(s):  
Abrupt Change ◽  
Low Cost ◽  
X Ray ◽  
Cost System ◽  
Routine Work ◽  
Precise Adjustment ◽  
Filter Array ◽  
Filter Thickness ◽  
User Friendly ◽  
X Ray Absorption

X-ray spectrochemical analysis, with either energy-dispersive (EDS) or wavelength-dispersive (WDS) systems, is is used extensively by electron microscopists to determine the chemical composition of selected features in a wide variety of specimens. Several decades of development have yielded efficient and rugged detector crystals and goniometer hardware as well as sophisticated, but user-friendly, software for quantitative chemical and image analysis. Nevertheless an alternative system, based on differential x-ray absorption with "balanced" transmission filters (DXS™) has attractive advantages as a simple, low cost, system for qualitative x-ray microanalysis which does not require liquid nitrogen. Computer processing of intensities obviates the former need for impossibly-precise adjustment of filter thickness. However the filter array must be preset for analysis of the elements that are believed to be present for routine work.DXS analysis is based on the abrupt change in x-ray absorption that occurs between particular elements. This is illustrated by the different mass absorption coefficients for Fe and Cr K radiation for a series of filters in increasing atomic number from Ti to Co as shown in Figure 1 (1,2).

scholarly journals Development of a Low-Cost System for Laparoscopic Skills Training

2019 ◽  
Vol 04 (03n04) ◽  
pp. 1942002
Author(s):  
Jui-Te Lin ◽  
Shanglei Liu ◽  
Arielle Lee ◽  
Ryan Broderick ◽  
Garth Jacobsen ◽  
...  
Keyword(s):  
Low Cost ◽  
Surgical Techniques ◽  
Skills Training ◽  
Physical Models ◽  
Hand Motion ◽  
Laparoscopic Skills Training ◽  
Cost System ◽  
Before And After ◽  
And Control ◽  
New System

Technological advancements in video equipment and biocompatible materials have enabled improvements in complex surgery through small incisions. The mastery of these laparoscopic surgical techniques is now a requirement for surgeons, however, the necessary skills are not intuitive and require hundreds of practice hours. The current state of surgical education includes animate models, inanimate physical models, and computer-based simulations, the latter of which are limited by cost, accessibility, and a lack of engagement. We propose a novel low-cost training interface that mimics the laparoscopic surgical environment using customized instruments whose movement and control are used as inputs for video games. The system is significantly less expensive than commercial systems and allows users freedom to select and play any game, enabling a take-home system with potential for higher levels of engagement, as well as familiarity and expertise with ambidextrous laparoscopic hand motion. A preliminary study compared performance on FLS (Fundamentals of Laparoscopic Surgery) testing before and after training. For a precision cutting task, groups that trained on a standard simulator or on the new system with either a noninverted or inverted hand-instrument mapping showed statistically significant improvements, warranting further investigation of training with this new system.

scholarly journals Low Cost MR Compatible Haptic Stimulation with Application to fMRI Neurofeedback

2020 ◽  
Vol 10 (11) ◽  
pp. 790
Author(s):  
Kymberly D. Young ◽  
Nicole Prause ◽  
Sarah Lazzaro ◽  
Greg J. Siegle
Keyword(s):  
Haptic Feedback ◽  
Low Cost ◽  
Clinical Intervention ◽  
Vibrotactile Stimulation ◽  
Initial Application ◽  
Cost System ◽  
Set Up ◽  
User Friendly ◽  
Haptic Stimulation ◽  
Viable Method

The most common feedback displays in the fMRI environment are visual, e.g., in which participants try to increase or decrease the level of a thermometer. However, haptic feedback is increasingly valued in computer interaction tasks, particularly for real-time fMRI feedback. fMRI-neurofeedback is a clinical intervention that has not yet taken advantage of this trend. Here we describe a low-cost, user-friendly, MR-compatible system that can provide graded haptic vibrotactile stimulation in an initial application to fMRI neurofeedback. We also present a feasibility demonstration showing that we could successfully set up the system and obtain data in the context of a neurofeedback paradigm. We conclude that vibrotactile stimulation using this low-cost system is a viable method of feedback presentation, and encourage neurofeedback researchers to incorporate this type of feedback into their studies.

The Study on Cloud Storage Data Management Method Based on Minimum Access Cost for Internet of Things

2012 ◽  
Vol 198-199 ◽  
pp. 1657-1662 ◽  
Author(s):  
Xiao Hong Song
Keyword(s):  
Internet Of Things ◽  
Cloud Storage ◽  
Low Cost ◽  
Minimum Cost ◽  
Data Access ◽  
Distribution Method ◽  
Access Cost ◽  
Cost Distribution ◽  
Fundamental Research ◽  
Management Method

According to the characteristics of data access in Internet of things, we put forward a replicate distribution method of minimum cost which considers the number and type of replicate in cloud storage. By this method, the replicates will be distributed to storage servers with minimum total cost from several data service points. This method is fundamental research of low cost distribution for replicates in cloud storage based on data access load.

scholarly journals INTERNET OF THINGS UNTUK DETEKSI LONGSOR DI DESA BANARAN KECAMATAN PULUNG KABUPATEN PONOROGO

2019 ◽  
Vol 18 (2) ◽  
Author(s):  
Budi Artono ◽  
Rakhmad Gusta Putra
Keyword(s):  
Internet Of Things ◽  
Detection System ◽  
Low Cost ◽  
The Internet ◽  
Hazard Detection ◽  
Deep Wound ◽  
Internet Platform ◽  
User Friendly ◽  
And Control ◽  
The Internet Of Things

ABSTRACTLandslide disaster that occurred in Banaran Village, Pulung Sub-district, Ponorogo Regency, in April 2017 caused many victims and left a deep wound. This disaster happened suddenly and unpredictably. Around the location there are many residents and government facilities. Landslides are difficult to detect. To be able to monitor landslides needed tools that can help provide early warning. It should be a remote control system. The Internet can be used as a medium of communication and control of equipment remotely. The advantage is its ability to connect countries and continents with low cost and relatively easy. the Internet is no longer just to connect between humans but also connect between any connected objects (the Internet of Things). Cayenne is one of the IoT (Internet of Things) platforms as well as a server that is able to store projects, supports various types of microcontrollers, user-friendly interface and has a variety of communication protocols in connecting between the microcontroller with the internet platform. This landslide hazard detection system will monitor the movement of the ground by using a processor (microcontroller), and wifi module as a data sender to be viewed and monitored on the IOT Cayenne platform through mobile phones with android operating system.Keywords: Landslides detection, Internet of Things, Arduino, Cayenne.ABSTRAKBencana tanah longsor yang terjadi di Desa Banaran, Kecamatan Pulung Kabupaten Ponorogo pada bulan april 2017 yang lalu mengakibatkan banyak korban serta meninggalkan luka mendalam. Bencana ini terjadi secara tiba-tiba dan tanpa bisa diprediksi. Di sekitar lokasi banyak terdapat pemukiman warga dan fasilitas pemerintah. Tanah longsor termasuk sulit untuk dideteksi. Untuk bisa memantau tanah longsor diperlukan alat yang dapat membantu memberikan peringatan dini. Alat tersebut harus merupakan sistem kendali jarak jauh. Internet dapat digunakan sebagai media komunikasi dan kontrol peralatan dari jarak jauh . Kelebihannya adalah kemampuannya yang dapat menghubungkan negara serta benua dengan biaya murah dan relatif mudah. internet tidak lagi hanya untuk menghubungkan antar manusia tapi juga menghubungkan antar benda apapun yang dapat terhubung (Internet of Things). Cayenne merupakan salah satu platform IoT (Internet of Things) sekaligus sebagai server yang mampu menyimpan project, mendukung berbagai jenis mikrokontroler, interface yang user-friendly dan mempunyai berbagai macam protokol komunikasi dalam menghubungkan antara mikrokontroler dengan platform internet. Sistem deteksi bahaya longsor ini nantinya akan memantau pergerakan tanah dengan menggunakan prosesor (mikrokontroler), dan modul wifi sebagai pengirim data untuk dapat dilihat dan dimonitor pada platform IoT Cayenne melalui handphone dengan sistem operasi android.Kata Kunci: Deteksi longsor, Internet of Things, Arduino, Cayenne.

Low-Cost System Handles Patient Phone Calls

2007 ◽  
Vol 40 (11) ◽  
pp. 53
Author(s):  
BRUCE K. DIXON
Keyword(s):  
Low Cost ◽  
Cost System ◽  
Phone Calls

Intelligent, low-cost system for fume control during laser material processing

2005 ◽  
Author(s):  
Ramin Sattari ◽  
Stephan Barcikowski ◽  
Thomas Püster ◽  
Andreas Ostendorf ◽  
Heinz Haferkamp
Keyword(s):  
Material Processing ◽  
Low Cost ◽  
Laser Material Processing ◽  
Laser Material ◽  
Cost System

Bringing Security to The Smallest Embedded Systems

2017 ◽  
Author(s):  
JOSEPH YIU
Keyword(s):  
Internet Of Things ◽  
Embedded Systems ◽  
Low Cost ◽  
Security Requirements ◽  
The Internet ◽  
Security Measures ◽  
Significant Challenge ◽  
Iot Devices

The increasing need for security in microcontrollers Security has long been a significant challenge in microcontroller applications(MCUs). Traditionally, many microcontroller systems did not have strong security measures against remote attacks as most of them are not connected to the Internet, and many microcontrollers are deemed to be cheap and simple. With the growth of IoT (Internet of Things), security in low cost microcontrollers moved toward the spotlight and the security requirements of these IoT devices are now just as critical as high-end systems due to:

Tools of Transformation: Appropriate Technology in U.S. Countercultural Literature

2012 ◽  
Vol 44 (2) ◽  
pp. 75-93
Author(s):  
Peter Mortensen
Keyword(s):  
Low Cost ◽  
Appropriate Technology ◽  
Small Scale ◽  
Environmental Transformation ◽  
Buckminster Fuller ◽  
1960S And 1970S ◽  
The 1960S ◽  
Environmentally Sound ◽  
User Friendly ◽  
Second Wave

This essay takes its cue from second-wave ecocriticism and from recent scholarly interest in the “appropriate technology” movement that evolved during the 1960s and 1970s in California and elsewhere. “Appropriate technology” (or AT) refers to a loosely-knit group of writers, engineers and designers active in the years around 1970, and more generally to the counterculture’s promotion, development and application of technologies that were small-scale, low-cost, user-friendly, human-empowering and environmentally sound. Focusing on two roughly contemporary but now largely forgotten American texts Sidney Goldfarb’s lyric poem “Solar-Heated-Rhombic-Dodecahedron” (1969) and Gurney Norman’s novel Divine Right’s Trip (1971)—I consider how “hip” literary writers contributed to eco-technological discourse and argue for the 1960s counterculture’s relevance to present-day ecological concerns. Goldfarb’s and Norman’s texts interest me because they conceptualize iconic 1960s technologies—especially the Buckminster Fuller-inspired geodesic dome and the Volkswagen van—not as inherently alienating machines but as tools of profound individual, social and environmental transformation. Synthesizing antimodernist back-to-nature desires with modernist enthusiasm for (certain kinds of) machinery, these texts adumbrate a humanity- and modernity-centered post-wilderness model of environmentalism that resonates with the dilemmas that we face in our increasingly resource-impoverished, rapidly warming and densely populated world.

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