Search results for " sensors"
showing 9 items of 229 documents
A novel device for assessing the health risk caused by hand-arm vibrations in olives harvesting
2012
The mechanization of olive harvesting is very important both to reduce the costs of production and to assure the oil quality because the manual harvest does not allow to operate at the right time and also need a long period to be completed. The use of portable shakers, that are spreading more than others typologies, can give a solution to the problem. However, the use of such equipment may involve risk of exposure to hand-transmitted vibration. The aim of this study was to assess the level of exposure to hand-arm vibration of the operators using portable shakers (reference standards UNI EN ISO 5349-1:2004, Italian Low Decree 81/2008). The research presented here concerns the definition of a…
Alvas oksīda (SnO2) elektroķīmiskā gāzu sensora aprobācija smaku monitoringam ārtelpu gaisa vidē
2017
Maģistra darbā pētītas un analizētas smaku piesārņojuma koncentrācijas noteikšanas iespējas, izmantojot alvas oksīda elektroķīmiskos gāzu sensorus Figaro TGS: 2600; 2602; 2603; 2620. Darba izstrādes gaitā izstrādāts sensora kalibrācijas algoritms toluolam, benzolam un etanolam un novērtēta 4 dažādu sensoru spēja reaģēt dažādos piesārņotības līmeņa lauka apstākļos (mēslota un pūstošu kāpostu lauka, bijušās lopkautuves – esošā cūkkopības uzņēmuma tuvumā, Rīgas Brīvostas uzņēmumu apkārtnē un piena pārstrādes uzņēmuma notekūdeņu attīrīšanas iekārtu tuvumā). Darbā ir apzināts iepriekšminēto gāzu sensoru potenciāls un izvērtētas iespējas veikt vielu kvantitatīvu analīzi.
INTRODUCTION TO WEARABLE HEALTHCARE TECHNOLOGY
2017
Teknologian nopea kehitys on mahdollistanut ennennäkemättömän pienten tietokoneiden valmistuksen. Puettavat teknologiat käyttävät hyväkseen näitä pieniä puettavia laitteita, joilla on tarkoitus parantaa elämänlaatua. Puettavien teknologialaitteiden määrän kasvun on odotettu saavuttavan miljardin laitteen rajan vuoden 2022 tienoilla. Koska terveydenhuolto hyötyy teknologian kehityksestä, se on oiva kohde puettavan teknologian hyödylliseen käyttöön. Tämän tutkielman tarkoituksena on luoda yleislaatuinen selvitys puettavista teknologioista, niiden antamista mahdollisuuksista ja riskitekijöistä terveydenhuollon alalla. Aiemmat tutkimukset asiasta ovat keskittyneet lähinnä puettavan teknologian …
Methods for estimating forest stem volumes by tree species using digital surface model and CIR images taken from light UAS
2012
In this paper we consider methods for estimating forest tree stem volumes by species using images taken from light unmanned aircraft systems (UAS). Instead of using LiDAR and additional multiband imagery a color infrared camera mounted to a light UAS is used to acquire both imagery and the DSM of target area. The goal of this study is to accurately estimate tree stem volumes in three classes. The status of the ongoing work is described and an initial method for delineating and classifying treetops is presented.
Longitudinal Gait Analysis of a Transfemoral Amputee Patient: Single-Case Report from Socket-Type to Osseointegrated Prosthesis
2023
The aim of the present case report was to provide a longitudinal functional assessment of a patient with transfemoral amputation from the preoperative status with socket-type prosthesis to one year after the osseointegration surgery. A 44 years-old male patient was scheduled for osseointegration surgery 17 years after transfemoral amputation. Gait analysis was performed through 15 wearable inertial sensors (MTw Awinda, Xsens) before surgery (patient wearing his standard socket-type prosthesis) and at 3-, 6-, and 12-month follow-ups after osseointegration. ANOVA in Statistical Parametric Mapping was used to assess the changes in amputee and sound limb hip and pelvis kinematics. The gait symm…
A system to monitor the main ambient parameters in the vineyard with wireless sensors
2009
Wireless technologies have been under rapid development during recent years but applications of wireless sensors in agriculture and food industry are still rare. The aim of this study is to monitor the micro-climate of the grapevine in order to monitor the adversities of the spring period reducing the operating costs of the vineyard and increasing the quality of grapes. At this purpose a Wireless Sensor Network (WSN) was used. Furthermore, a comparison was performed between the data measured by the wireless sensors and the data provided by the fixed meteorological station of the Regione Siciliana (SIAS).
Coverage study of a sustainable IoT system for industrial applications
2022
Los dispositivos del Internet de las Cosas (IoT) son muy útiles para monitorizar información en escenarios industriales incluso en zonas que tienen difícil acceso a través de las conexiones tradicionales. Las comunicaciones inalámbricas fiables pueden ser un reto en entornos industriales, donde la señal de comunicaciones es a menudo bloqueada debido a la presencia de maquinaria industrial, con posibles bloqueos intermitentes y/o impredecibles. Este artículo evalúa las características de cobertura de un despliegue sostenible y de bajo coste de dispositivos IoT para monitorizar una instalación industrial dedicada al diseño y montaje de sistemas de automatización para la industria alimentaria.…
Precision Agriculture: Past, Present and Future
2011
From 1978 the Global Positioning System, needed for sensing the position of military targets (e.g. buildings, machinery), was developed as a pure military system, while in 1983 it was made available also for public use. Therefore, at the beginning of 80s precision agriculture, requiring GPS for sensing the position to which any measured field parameter must be geo-referenced, was implemented for the first time in US. In fact, soil and crop parameters are spatially variable in a field, so that spatially uniform rate crop input applications cause increased environmental impact and crop input waste. In order to reduce the environmental impact and optimise the use of crop inputs, precision agri…
Čukstošas galerijas modas rezonatoru temperatūras sensors
2019
Čukstošo galerijas modu (ČGM) rezonatori ir sfēriskas formas objekti, kas ir taisīti no optiski caurspīdīgiem materiāliem un ir spējīgi uzturēt optiski cirkulējošu vilni iekšā sfērā, izmantojot pilnīgu iekšējo atstarošanos. Ja ir monohromātisks gaismas avots ar konstantu intensitāti, tad vilnis, kas kustās pa lodes perimetru, sāk konstruktīvi interferēt. Šajā gadījumā rodas rezonanse, ko sauc par čukstošo galeriju modu (ČGM), pēc analoģijas no akustikas. Darbā tiek aplūkots koncepts, ka ČGM rezonatorus varētu izmantot kā temperatūras sensorus. Izmantojot dažāda lieluma rezonatorus un mainot tempratūru, tiek testēta sistēma un rezonanses. Darbā tiek veidota praktiska sistēma ar kuras palīdzī…