Bibliographies thématiques / Analogue sensor

Littérature scientifique sur le sujet « Analogue sensor »

Auteur : Grafiati
Publié le 4 mai 2024

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Articles de revues sur le sujet "Analogue sensor"

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Mohd Fauzie Jusoh, Muhammad Firdaus Abdul Muttalib, Nur Sakinah Saedin et Mohd Mahmud. « Automatic Monitoring of Class A Pan Evaporation using the Internet of Things (IoT) ». Advanced and Sustainable Technologies (ASET) 3 (1 mars 2024) : 78–89. http://dx.doi.org/10.58915/aset.v3i.586.

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This study aimed to assess suitable water level sensor types and implement the automated monitoring of water levels within a Class A pan evaporation system using the Internet of Things (IoT). Both analogue and ultrasonic water level sensors underwent testing in controlled laboratory conditions for performance analysis. The results showed that the analogue water level sensor exhibited suboptimal output sensor responses compared to the ultrasonic sensor, primarily due to its susceptibility to variations in solution types and immersion depths. In contrast, ultrasonic sensors demonstrated strong performance with acceptable error rates, as evidenced by the Mean Absolute Error (MAE) of 1.03, Root Mean Squared Error (RMSE) of 1.42, and Coefficient of Determination (R²) of 0.94 during laboratory testing. However, the ultrasonic sensor's performance was somewhat reduced during field testing, exhibiting accuracy levels ranging from 6.7% to 51.2% within a greenhouse environment during rock melon cultivation. These discoveries highlight the feasibility of using ultrasonic sensors with environmental calibration to automate real-time evaporation measurements towards precision irrigation practices.
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Kelemenova, Tatiana, et Michal Kelemen. « Calibration of force sensor ». Acta Mechatronica 8, no 2 (30 juin 2023) : 23–27. http://dx.doi.org/10.22306/am.v8i2.97.

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The paper deals with the issue of calibration of an analogue force sensor with a voltage output. For measurement, the force sensor uses a deformation member with a tensometric bridge and a measuring amplifier. This measuring chain must be used for force measurement, but the measurement uncertainty of this measuring chain is not known. Force sensors are planned for use in intelligent traumatological external fixation systems.
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Golcs, Ádám, Panna Vezse, Bálint Árpád Ádám, Péter Huszthy et Tünde Tóth. « Comparison in practical applications of crown ether sensor molecules containing an acridone or an acridine unit – a study on protonation and complex formation ». Journal of Inclusion Phenomena and Macrocyclic Chemistry 101, no 1-2 (8 juin 2021) : 63–75. http://dx.doi.org/10.1007/s10847-021-01086-2.

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AbstractCrown ethers containing an acridone or an acridine unit are successfully applied opto- and electrochemical cation sensors. The heteroaromatic unit of these macrocycles can be in different forms during the applications, which have a strong influence on the sensing behavior. Moreover, in the case of acridono-macrocycles a prototropic equilibrium takes place upon complexation, which is effected by the physicochemical characteristics. A Pb2+-selective acridono-18-crown-6 ether and its 9-phenylacridino-analogue were used as model compounds for comparing the different forms of the heterocyclic units of these sensor molecules. Since in most practical sensor applications of the fluorescent hosts a non-neutral aqueous medium is present, studies on complexation and signaling were carried out from the aspect of the relationship among protonation, coordinating ability, complex stability and tautomeric equilibrium. A strong interdependence among these factors was found and limitations of using unsubstituted acridino- and acridono-sensor molecules in comparison with their 9-substituted-acridino-analogues were discussed. This study will hopefully serve as a useful standpoint for future development of ionophore-based sensors containing an acridone or an acridine unit.
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Gilewski, Marian. « Micro-Electro-Mechanical Systems in Light Stabilization ». Sensors 23, no 6 (8 mars 2023) : 2916. http://dx.doi.org/10.3390/s23062916.

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This article discusses application considerations in the micro-electro-mechanical system’s optical sensor. Furthermore, the provided analysis is limited to application issues occurring in research or industrial applications. In particular, a case was discussed where the sensor was used as a feedback signal source. Its output signal is used to stabilize the flux of an LED lamp. Thus, the function of the sensor was the periodic measurement of the spectral flux distribution. The application problem of such a sensor is the output analogue signal conditioning. This is necessary to perform analogue-to-digital conversion and further digital processing. In the discussed case, design limitations come from the specifics of the output signal. This signal is a sequence of rectangular pulses, which can have different frequencies, and their amplitude varies over a wide range. The fact such a signal must be conditioned additionally discourages some optical researchers from using such sensors. The developed driver allows measurement using an optical light sensor in the band from 340 nm to 780 nm with a resolution of about 12 nm; in the range of flux values from about 10 nW to 1 μW, and frequencies up to several kHz. The proposed sensor driver was developed and tested. Measurement results are presented in the paper’s final part.
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Röder, Marnie. « Flexible Fill-Level Sensor with Analogue Signal ». Industrial Vehicle Technology International 29, no 2 (juin 2021) : 59. http://dx.doi.org/10.12968/s1471-115x(23)70201-8.

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Hettiaratchi, D. R. P., et M. Ahmed. « A plant analogue sensor for irrigation scheduling ». Journal of Agricultural Engineering Research 48 (janvier 1991) : 37–55. http://dx.doi.org/10.1016/0021-8634(91)80003-w.

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Radetic, Radojle, Marijana Pavlov-Kagadejev et Nikola Milivojevic. « The analog linearization of Pt100 working characteristic ». Serbian Journal of Electrical Engineering 12, no 3 (2015) : 345–57. http://dx.doi.org/10.2298/sjee1503345r.

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The most exact temperature measurement can be made by using platinum sensors. Temperatures from -254.3?C up to +850?C can be measured with Pt100 sensor. The relationship between resistance and temperature is relatively linear, but for measurements of very high precision, Pt100 working curve should be a little bit improved. The paper describes an efficient way of measurement characteristic linearization by using the analogue electric circuits. The obtained results proved the initial considerations and the Pt100 becomes rather transducer than pure sensor.
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Tatlas, Nikolas Alexander, Dimitris Ballios, Stelios M. Potirakis, Christina Charitou, Stelios Koutroubinas et Maria Rangoussi. « A Smart Sensor Platform for Greenhouse Applications ». Key Engineering Materials 644 (mai 2015) : 92–95. http://dx.doi.org/10.4028/www.scientific.net/kem.644.92.

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A platform for a flexible, smart sensing system using available hardware components for monitoring the operation of a greenhouse is presented. The smart sensor is based on a ZigBee MCU embedded system with multiple connectivity options to facilitate digital or analogue sensors as well as the necessary peripherals for energy management and programming/debugging. A number of physical parameters may be simultaneously monitored by each node, such as temperature, relative humidity, CO2, light intensity, soil pH / moisture through appropriate sensors. Basic functions, such as sensor differential detection and measurement consistency may be performed at the smart sensor. A central node, also acting as the Zigbee network coordinator will concentrate the various measurements through the wireless network, act as a local display and also forward the information to a back-end. The back-end will provide proper measurement visualization (including history) through any web-enabled device, as well as services such as alert notification in hazardous situations (e.g. flood / heating failure).
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Zatorre, Guillermo, Nicolás Medrano, María Teresa Sanz, Concepción Aldea, Belén Calvo et Santiago Celma. « Digitally Programmable Analogue Circuits for Sensor Conditioning Systems ». Sensors 9, no 5 (14 mai 2009) : 3652–65. http://dx.doi.org/10.3390/s90503652.

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Schröder, Jens, Steffen Doerner, Thomas Schneider et Peter Hauptmann. « Analogue and digital sensor interfaces for impedance spectroscopy ». Measurement Science and Technology 15, no 7 (8 juin 2004) : 1271–78. http://dx.doi.org/10.1088/0957-0233/15/7/007.

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Thèses sur le sujet "Analogue sensor"

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Ahmed, M. « A plant analogue sensor for irrigation scheduling ». Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378303.

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Nairac, Alexandre L. « An analogue visual velocity sensor for robot navigation ». Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339084.

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Jafaripanah, Mehdi. « Analogue adaptive techniques for dynamic sensor frequency compensation ». Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419164.

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Coulson, Michael P. « Precision analogue techniques for a silicon on glass ambient light sensor ». Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711607.

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Hamilton, Tony. « An analogue model for the simulation of earthquake rupture and stick-slip ». Thesis, University of Ulster, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326325.

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Kitchen, Alistair J. « CMOS digital pixel sensor array with time domain analogue to digital conversion ». Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2004. https://ro.ecu.edu.au/theses/765.

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This thesis presents a digital pixel sensor array, which is the first stage of an ongoing project to produce a CMOS image sensor with on-chip image processing. The analogue to digital conversion is performed at the pixel level, with the result stored in pixel memory. This architecture allows fast, reliable access to the image data and simplifies the integration of the image array and the processing logic. Each pixel contains a photodiode sensor, a comparator, memory and addressing logic. The photodiode sensor operates in integrating mode, where the photodiode junction capacitance is first charged to an initial voltage, and then discharged by the photodiode leakage current, which is comprised mainly of optically generated carriers. The analogue to digital conversion is performed by measuring the time taken for the photodiode cathode voltage to fall from its initial voltage, to the comparator reference voltage. This triggers the 8-bit pixel memory, which stores a data value representative of the time. The trigger signal also resets the photodiode, which conserves the charge stored in the junction capacitance, and also prevents blooming. An on-chip control circuit generates the digital data that is distributed globally to the array. The control circuit compensates for the inverse relationship between the integration time and the photocurrent by adjusting the data clock timing. The period of the data clock is increased at the same rate as the integration time, resulting in a linear relationship between the digital data and the photocurrent. The design is realised as a 64 x 64 pixel array, manufactured in O.35µm 3.3 V CMOS technology. Each pixel occupies an area of 45µm x 45µm with a 12.3% fill factor, and the entire pixel array and control circuit measures 3.7mm x 3.9mm. Experimental results confirm the operation of the digital pixel, and the linearising control circuit. The digital pixel has a dynamic range of 85dB, and can be adapted to different lighting conditions by varying a single clock frequency. The data captured by the array can be randomly accessed, and is read from the array nondestructivcly.
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Choubey, Bhaskar. « On wide dynamic range logarithmic CMOS image sensors ». Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:f2d8ea6d-6b71-45bf-80dc-7dadb1421e3b.

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Logarithmic sensors are capable of capturing the wide dynamic range of intensities available in nature with minimum number of bits and post-processing required. A simple circuit able to perform logarithmic capture is one utilising a MOS device in weak inversion. However, the output of this pixel is crippled due to fixed pattern noise. Technique proposed to reduce this noise fail to produce high quality images on account of unaccounted high gain variations in the pixel. An electronic calibration technique is proposed which is capable of reducing both multiplicative as well as additive FPN. Contrast properties matching that of human eye are reported from these sensors. With reduced FPN, the pixel performance at low intensities becomes concerning. In these regions, the high leakage current of the CMOS process affects the logarithmic pixel. To reduce this current, two different techniques using a modified circuit and another with modified layout are tested. The layout technique is observed to reduce the leakage current. In addition, this layout can be used to linearise the output of logarithmic pixel in low light regions. The unique linear response at low light and logarithmic pixel at high light is further investigated. A new model based on the device physics is derived to represent this response. The fixed pattern noise profile is also investigated. An intelligent iterative scheme is proposed and verified to extract the photocurrent flowing in the pixel and correct the fixed pattern noise utilising the new model. Future research ideas leading to better designs of logarithmic pixels and post-processing of these signals are proposed at the end of the thesis.
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Lefebvre, Arnaud. « Contribution à l'amélioration de la testabilité et du diagnostic de systèmes complexes : application aux systèmes avioniques ». Grenoble 1, 2009. https://theses.hal.science/tel-00555683.

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L'objet des travaux de cette thèse est de proposer de nouveaux processus de définition de tests (testabilité), de nouvelles méthodes de tests, ainsi que de nouvelles méthodes d'interprétation des tests (diagnostic). Ces travaux ont été menés dans le cadre de l'aéronautique et ont porté dans un premier temps sur l'identification des besoins en diagnostic des hélicoptères. Les problématiques liées au test et au diagnostic des hélicoptères portaient sur : - La non-détection de certaines défaillances - L'occurrence de nombreuses fausses alarmes - L'ambiguïté de localisation de défaillances Dans un premier temps nous avons réalisé l'état de l'art des recherches en diagnostic, ceci afin de sélectionner les technologies et méthodologies permettant de répondre aux problématiques identifiées. Les technologies candidates ont ensuite été architecturées afin de proposer un traitement intégré permettant de répondre à l'ensemble des besoins identifiés. Ainsi nous avons travaillé sur les méthodologies de définition du test, aux moyens d'outils de simulation de la testabilité. Nous avons aussi défini de nouvelles méthodes de test permettant de déterminer l'état de capteurs analogiques aux moyens d'algorithmes basés sur des évaluateurs de calcul de variation de l'écart type, du facteur de forme et du rapport signal sur bruit. Nous avons ensuite travaillé sur l'amélioration du diagnostic au niveau système à l'aide d'automates temporisés afin de simuler le fonctionnement des arbres de tests élémentaires. Ces travaux ont ensuite conduit à la modélisation et au diagnostic des systèmes complexes à l'aide des diagrammes d'état, des arbres de défaillances dynamiques, ainsi que leur simulation à l'aide des réseaux de Petri. Les modèles utilisés ont été complétés au moyen de nouvelles portes dynamiques. Ces travaux ont été appliqués au monde aéronautique, sur plusieurs hélicoptères et ont fait l'objet de deux brevets
The object of the work of this thesis is to propose new processes of definition of tests (testability), new methods of tests, as well as new methods of tests interpretation (diagnosis). This work was carried out in the framework of aeronautics. It first intends to identify the needs of the helicopter diagnosis. The identified problems, related to the test and the diagnosis of the helicopters, were: - Non-detection of failures - Occurrence of many false alarms - Failure localisation ambiguity We first achieved the state of the art of research in diagnosis, in order to select technologies and methodologies allowing to answer the problematic. Candidate technologies were then structured in order to propose an integrated treatment. Thus we worked on methodologies of definition of the test, with testability simulation tools. We also defined new methods of test which allows determining the status of analogue sensors with the means of algorithms based on the calculus of variation of the standard deviation, form factor and noise-signal ratio. We then worked on the improvement of the diagnosis at system level using timed automata in order to simulate the operation of the tests tree. This work then led to the modelling of the complex systems using state diagram, dynamic fault trees, as well as their simulation with Petri networks. Additional doors were defined to complete the existing algorithms. Finally, this work was applied to the aeronautical world, to several helicopters and was the subject of two patents
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Cederlund, Jacob. « Radiated Susceptibility Measurements on Analogue Temperature Sensors ». Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279959.

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The need for electromagnetic compatibility is growing steadily as the usage of electronics in our daily lives is increasing more than ever. A common issue encountered in electromagnetic compatibility testing is analogue sensors that fail when exposed to electromagnetic fields. Testing how well electronics do when exposed to electromagnetic fields is called susceptibility testing, and standards for how to do these tests have been developed to ensure that the results of the tests can be reproduced. In this thesis work, analogue temperature sensors have been shielded using a few common techniques. The susceptibility of the sensors has been analysed by looking at their output voltage when the sensors were exposed to electro- magnetic fields of different field strengths. The output of the sensors was read by an Arduino that was shielded and tested to make sure it would not be affected by the electromagnetic fields used in the sensor tests. The result of the first set of sensor tests shows that shielding the cables running to the analogue temperature sensors and filtering away disturbances using ferrites gives a considerable decrease in susceptibility against electro- magnetic fields, while twisted cables and RC-filters did not. The results also showed that the introduction of a ground plane increased the susceptibility of the sensors, which most likely was due to it not providing the current with a path of less impedance and only served to increase the length of the unintentional antenna, which made it couple to the electromagnetic field more easily. However, during a second round of testing, the results of all the tests were hard to reproduce exactly, which calls into question how trustable the results of standardised susceptibility tests are. Therefore, when designing for the electromagnetic susceptibility of a product, a rather wide margin should be used in order to make sure that the product can reliably pass susceptibility tests.
Användningen av elektronik ökar i samhället och därför även nödvändigheten för testning av elektromagnetisk kompatibilitet. Ett vanligt problem inom elektromagnetisk kompatibilitet är att analoga sensorer lätt blir utstörda av elektromagnetiska fält. Hur man ska testa en elektronisk produkts känslighet mot elektromagnetiska fält styrs av standarder som ser till att resultaten av testerna går att återskapa. I detta examensarbete har analoga temperatursensorer skärmats med ett par vanliga metoder. Sensorernas känslighet har analyserats genom att undersöka hur deras utspänning påverkas när sensorn blir utsatt för elektromagnetiska fält med olika fältstyrkor. Sensorernas utspänning lästes av en Arduino som skärmades och testades för att se till all att den inte påverkades av de elektromagnetiska fälten som användes under testandet av sensorerna. Resultaten från de första sensortesterna visar att använda skärmade kablar till de analoga temeperatursensorerna och att filtrera bort störningar med ferriter sänkte sensorernas känslighet mot elektromagnetiska fält betydligt medan tvinnade kablar och RC filter inte gjorde det. Testerna visade också att jord- plan i detta fall ökade sensorernas känslighet då de inte erbjöd en bättre väg för strömmen att gå utan endast skapade en längre oavsiktlig antenn, vilket gjorde att den lättare kunde koppla till det elektromagnetiska fältet. Däremot visade det sig i en andra testomgång, att resultaten inte gick att återskapa ex- akt. Detta ifrågasätter hur tillförlitliga dessa standardiserade tester är och visar att man bör ha en ganska bred marginal när man designar för att minska en produkts känslighet mot elektromagnetiska fält, så att den på ett tillförlitligt sätt kommer kunna klara av känslighetstester.
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Latzel, Stephan. « Test und Selbsttest von analogen Auswerteelektroniken bei Sensorsystemen in der Betriebsphase ». Berlin Logos, 2008. http://d-nb.info/990541894/04.

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Livres sur le sujet "Analogue sensor"

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Roermund, Arthur van. Analog Circuit Design : : Sensor and Actuator Interface Electronics, Integrated High-Voltage Electronics and Power Management, Low-Power and High-Resolution ADC's. U.S. : Springer, 2005.

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Veeder, Kenton T. Digital converters for image sensors. Bellingham, Washington USA : SPIE Press, 2015.

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Bakker, Anton. High-Accuracy CMOS Smart Temperature Sensors. Boston, MA : Springer US, 2000.

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C, Sansen Willy M., Huijsing Johan H. 1938- et Plassche, Rudy J. van de., dir. Analog circuit design : Mixed A/D circuit design, sensor interface circuits and communication circuits. Boston : Kluwer Academic, 1994.

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Marien, Hagen. Analog Organic Electronics : Building Blocks for Organic Smart Sensor Systems on Foil. New York, NY : Springer New York, 2013.

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Workshop on Advances in Analogue Circuit Design (13th 2004 Montreux, Switzerland). Analog circuit design : Sensor and actuator interface electronics, integrated high-voltage electronics and power management, low-power and high-resolution ADC's. Boston : Kluwer Academic, 2004.

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Mahmoud, Kamal-Eldin Mohamed. Non-linear A/D converters for integrated silicon smart sensors = : Niet-lineaire A/D omzetters voor smart geïntegreerde silicium sensoren. Delft, Netherlands : Delft University Press, 1994.

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Bakker, Anton. High-accuracy CMOS smart temperature sensors. Boston, MA : Kluwer Academic Publishers, 2000.

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Casier, Herman. Analog Circuit Design : Sensors, Actuators and Power Drivers ; Integrated Power Amplifiers from Wireline to RF ; Very High Frequency Front Ends. Dordrecht : Springer Science + Business Media B.V, 2008.

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Jasink, Anna Margherita, et Giulia Dionisio, dir. MUSINT 2. Florence : Firenze University Press, 2017. http://dx.doi.org/10.36253/978-88-6453-396-4.

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Musint 2 si propone come un testo da ‘leggere’ che accompagna il nuovo sito-web MUSINT II, seguendo e innovando le linee generali del precedente MUSINT. Ma, come i due progetti on-line differiscono sia negli aspetti tecnici che nei contenuti, pur mantenendo principi e finalità analoghi, così anche il nuovo volume assume un ruolo che lo rende una novità più consona ai progressi che caratterizzano le discipline archeologiche sia sotto l’aspetto scientifico che quello didattico. Viene mantenuta la suddivisione in tre sezioni. La prima contiene una serie di lavori direttamente legati al sito MUSINT II. Si nota un aumento delle presentazioni relative agli aspetti tecnici e didattici, ritenuti una innovazione del nuovo sito, rispetto ai contributi scientifici intesi in senso più tradizionale. La seconda sezione presenta una esemplificazione di lavori significativi di musealizzazione virtuale, volutamente scelta negli ambiti più vari, sottolineandone il taglio didattico. La terza sezione si presenta sullo stesso piano di quella del volume precedente, anche se sono riscontrabili delle novità proprio nella scelta delle ricerche: vengono infatti presentate tematiche già proposte in fase sperimentale e nuove ricerche che si sono venute individuando nel corso di questi anni attraverso le conoscenze più ampie sulle possibilità di una museologia digitale e interattiva.
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Chapitres de livres sur le sujet "Analogue sensor"

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Taylor, H. Rosemary. « Elements of analogue to digital and digital to analogue converters ». Dans Data Acquisition for Sensor Systems, 127–40. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-4905-2_7.

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Taylor, H. Rosemary. « Digital to analogue converters ». Dans Data Acquisition for Sensor Systems, 141–62. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-4905-2_8.

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Taylor, H. Rosemary. « Analogue to digital converters ». Dans Data Acquisition for Sensor Systems, 163–211. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-4905-2_9.

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Dudek, Piotr. « SCAMP-3 : A Vision Chip with SIMD Current-Mode Analogue Processor Array ». Dans Focal-Plane Sensor-Processor Chips, 17–43. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6475-5_2.

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Rizik, Luna, Litovco Phyana et Daniel Ramez. « Digital and Analogue Approaches to Whole-Cell Sensor Design ». Dans Handbook of Cell Biosensors, 1–17. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-47405-2_128-1.

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Rizik, Luna, Litovco Phyana et Daniel Ramez. « Digital and Analogue Approaches to Whole-Cell Sensor Design ». Dans Handbook of Cell Biosensors, 205–21. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-23217-7_128.

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van der Goes, Frank M. L., et Gerard C. M. Meijer. « Low-Cost Interfaces for Sensors and Sensor Systems ». Dans Analog Circuit Design, 197–217. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-2602-2_10.

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de Silva, Clarence W. « Analog Motion Sensors ». Dans Sensor Systems, 347–433. Boca Raton : Taylor & Francis, CRC Press, 2017. : CRC Press, 2016. http://dx.doi.org/10.1201/9781315371160-8.

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Usher, M. J. « Analogies between Systems ». Dans Sensors and Transducers, 9–22. London : Macmillan Education UK, 1985. http://dx.doi.org/10.1007/978-1-349-18052-3_2.

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Usher, M. J., et D. A. Keating. « Analogies between Systems ». Dans Sensors and Transducers, 12–20. London : Macmillan Education UK, 1996. http://dx.doi.org/10.1007/978-1-349-13345-1_2.

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Actes de conférences sur le sujet "Analogue sensor"

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Wang, Runchun, Jonathan Tapson, Tara Julia Hamilton et Andre van Schaik. « An analogue VLSI implementation of polychromous spiking neural networks ». Dans 2011 Seventh International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP). IEEE, 2011. http://dx.doi.org/10.1109/issnip.2011.6146572.

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Zepp, Andreas, Szymon Gladysz, Rui Barros, Wolfgang Osten et Karin Stein. « Analogue holographic wavefront sensor : a performance analysis ». Dans SPIE Optical Engineering + Applications, sous la direction de Alexander M. J. van Eijk, Christopher C. Davis et Stephen M. Hammel. SPIE, 2015. http://dx.doi.org/10.1117/12.2187933.

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Mende, Michael, et Philipp Begoff. « Sensors with Digital Output – A Metrological Challenge ». Dans 19th International Congress of Metrology (CIM2019), sous la direction de Sandrine Gazal. Les Ulis, France : EDP Sciences, 2019. http://dx.doi.org/10.1051/metrology/201922002.

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The Internet of Things (IoT) as well as many other new applications require sensors that can already process data inside the sensor and exchange the pre-processed data more or less directly with their environment. Such sensors typically have a digital output and thus challenge current calibration systems which usually have analogue input channels. Furthermore most calibration standards were written for an analogue world and do not fit to sensors with internal A/D converters and data pre-processing. Based on experiences of the authors with the calibration of accelerometers with digital output, the paper will give an overview over the challenges that we will face in a digital sensor world. How will calibration systems for such transducers will look like? How do I calculate a measurement uncertainty if the signal processing inside a sensor is a black box? The paper addresses the challenges and tries to give an outlook how to meet them.
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Nakamura, T., H. Endoh, Y. Sakuraba et S. Yamamoto. « High Resolution Analogue Detection Distributed Temperature Sensor using Deconvolution ». Dans Optical Fiber Sensors. Washington, D.C. : OSA, 1996. http://dx.doi.org/10.1364/ofs.1996.th327.

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Chan, H. K., N. G. Wright et A. B. Horsfall. « Live demonstration : Extreme environment analogue electronics for sensor nodes ». Dans 2016 IEEE SENSORS. IEEE, 2016. http://dx.doi.org/10.1109/icsens.2016.7808569.

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Chee Yen Leow, Zhiguo Ding, K. K. Leung et D. L. Goeckel. « Analogue network coding for multi-pair, bidirectional relay channels ». Dans Sensor Signal Processing for Defence (SSPD 2010). IET, 2010. http://dx.doi.org/10.1049/ic.2010.0247.

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Karpachevskyy, Taras, et Swavik Spiewak. « Gravity-Assisted, Passive Cancellation of Disturbances for Inertial Sensors ». Dans ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65775.

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Continuing enhancements in Microsystem Technologies facilitate the development of inertial sensors — accelerometers and gyroscopes — of unprecedented performance to cost ratio and broaden the frontiers of their application. Of particular interest, because of their immunity to ambient disturbances, are sensors equipped with high resolution Electro-Mechanical ΣΔ converters and with a high speed, digital serial signal transmission. The digital circuitry of these sensors reaches the accuracy of 0.02 parts-per-million (ppm). However, the analogue transducers of measured physical quantities into electrical signals inside of the even best inertial sensors are prone to inherent imperfections of analog systems such as nonlinearity, cross-sensitivity, or noise. The best accuracy of these transducers is about two orders of magnitude worse than that of the electrical circuitry. The overall accuracy can be greatly improved by using corrective filters that cancel the effects of imperfections in the analogue transducers. The effectiveness of these filters hinges upon the accuracy of identifying comprehensive models of the analogue transducers. Ambient disturbances, in particular mechanical vibrations, greatly deteriorate the accuracy of identification. Their impact can be attenuated to some extent by using vibration isolation platforms. The effectiveness of attenuation is usually good at the frequencies above 5–10 Hz, however it is poor at low frequencies. This poor attenuation is a significant disadvantage since the low frequency phenomena in inertial sensors have pronounced impact on their suitability for a broad class of applications (e.g., navigation). The presented research focuses on the design of a passive vibration isolation device in which horizontal movement is coupled to tilt in a way that a component of the gravity perceived by the tested inertial sensor effectively cancels out the horizontal acceleration coming from the ambient vibrations.
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Wang, L., J. Y. Zhang, J. Huang, L. K. Chen, L. Yu, Y. T. Zhang et G. Z. Yang. « A Field Programmable Analogue ASIC towards Low Power Processing-on-Node BSNs ». Dans Implantable Body Sensor Networks Conference (BSN). IEEE, 2009. http://dx.doi.org/10.1109/bsn.2009.55.

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van Wanum, M., M. Polushkin et R. van Dijk. « Analogue baseband processing for single chip radar proximity sensor ». Dans 2020 17th European Radar Conference (EuRAD). IEEE, 2021. http://dx.doi.org/10.1109/eurad48048.2021.00116.

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Leijtens, Johan, Dick Broekmans et Frank Stelwagen. « Everything you always wanted to demand from a digital Sunsensor but couldn't get ». Dans ESA 12th International Conference on Guidance Navigation and Control and 9th International Conference on Astrodynamics Tools and Techniques. ESA, 2023. http://dx.doi.org/10.5270/esa-gnc-icatt-2023-003.

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True digital Sunsensors have been under development for a number of decades but until now it has proven to be very difficult to produce a radiation hard device that is cost effective enough to find widespread use. Analogue fine Sunsensors would fit the bill for every mission if it weren't for the Earth albedo sensitivity and the analogue interface. Adding the processing electronics adds significant more cost and complexity that the costs associated with the sensor itself and avoiding significant albedo errors is only possible by very carefully placing the sensors in combination with restrictions on the satellite pointing. Having an albedo insensitive sensor with a digital interface available would therefore lead to significant cost savings and reduction of application constraints. Producing a cost effective radiation hardened true digital Sunsensor is only possible if a dedicated single chip solution is found. Currently Lens R&D B.V and Systematic Design B.V with assistance of ESA experts are working on the development of such a solution within an ESA ARTES program. In order to remain technically feasible but still cost effective, a number of compromises needed to be made which will be addressed during the presentation. Although the cost target is twice the price of an ESA qualified Analogue fine Sunsensor, cost savings in the processing electronics will lead to significant cost savings at system level if this target can be achieved.
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Rapports d'organisations sur le sujet "Analogue sensor"

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Loudovikos, Nikolaos. Note from the Senior Editor. Analogia 17 (2023), mars 2023. http://dx.doi.org/10.55405/17-0-editorial.

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Johra, Hicham. Assembling temperature sensors : thermocouples and resistance temperature detectors RTD (Pt100). Department of the Built Environment, Aalborg University, décembre 2020. http://dx.doi.org/10.54337/aau449755797.

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Temperature is one of the most common physical quantities (measurand) to be measured in experimental investigations, monitoring and control of building indoor environment, thermal comfort and building energy performance. The most common temperature sensors are the thermocouples and the resistance temperature detectors (RTDs). These analog sensors are cheap, accurate, durable and easy to replace or to repair. The cable of these sensors can easily be shortened or extended. These sensors have a simple, monotonic and stable correlation between the sensor’s temperature and their resistance/voltage output, which makes them ideal for temperature measurement with electronic logging equipment. This technical report aims at providing clear guidelines about how to assemble and mount type-K thermocouples and Pt100 RTDs. These are the most common temperature sensors used in the Laboratory of Building Energy and Indoor Environment at the Department of the Built Environment of Aalborg University.
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Dufur et Chapman. PR-325-07205-R01 Development of a Turbocharger Monitoring System. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), janvier 2008. http://dx.doi.org/10.55274/r0010771.

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Turbocharger performance, especially on SIP-call engines, remains essentially unmeasured even though tracking information over time would provide critical information to help field engineers lower their engine emissions as well as the cost of operations. In 2006, with the assistance of funding from the Pipeline Research Council International Inc., ScavengeTech LLC developed and field tested a turbocharger monitoring system that consisted of a set of analog sensors to measure key turbocharger performance parameters and hardware to interface the sensor outputs to a computer. The collected data was then analyzed via a series of spreadsheets that normalized the data and trended it over time. While successfully demonstrated in the field, the hardware system was large and expensive. The anticipated sales price of $25,000 was outside the price point for widespread adoption by the industry. The objective of this project was to modify the turbocharger monitoring system to: 1) incorporate digital sensors, 2) decrease the footprint of the system, and 3) integrate the collected data and identified algorithms into one software package.
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Dufur et Chapman. PR-325-05216-R01 Turbocharger Performance Monitoring. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), janvier 2008. http://dx.doi.org/10.55274/r0010002.

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Turbocharger performance, especially on SIP-call engines, remains essentially unmeasured even though tracking information over time would provide critical information to help field engineers lower their engine emissions as well as the cost of operations. In 2006, with the assistance of funding from the Pipeline Research Council International Inc., ScavengeTech LLC developed and field tested a turbocharger monitoring system that consisted of a set of analog sensors to measure key turbocharger performance parameters and hardware to interface the sensor outputs to a computer. The collected data was then analyzed via a series of spreadsheets that normalized the data and trended it over time. While successfully demonstrated in the field, the hardware system was large and expensive. The anticipated sales price of $25,000 was outside the price point for widespread adoption by the industry.
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Jenkins, C. W., R. B. King et I. Bresinska. Synthesis of Polystyrene-Supported Dithizone Analogues for Use as Chemical Sensors for Heavy Metals. Office of Scientific and Technical Information (OSTI), juillet 1998. http://dx.doi.org/10.2172/656434.

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Bristow, Q. A digital signal processing unit for the geo instruments magnetic susceptibility sensors, with analogue and RS-232C outputs. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/120275.

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Ted Quinn et Jerry Mauck. Digial Technology Qualification Task 2 - Suitability of Digital Alternatives to Analog Sensors and Actuators. Office of Scientific and Technical Information (OSTI), septembre 2012. http://dx.doi.org/10.2172/1057681.

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Swanson, De Los Santos et Miller. L51539 Improved Methods for Inspecting Gas Storage Well Downhole Casing. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), janvier 1987. http://dx.doi.org/10.55274/r0010090.

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A considerable background of prior work indicates that corrosion damaged casing in gas storage wells is largely due to the development of individual corrosion pits, which occur either on the inside or outside wall of the casing. Such pits are inevitably the result of electrochemical potentials, which are established between unlike conductive materials in an electrolyte. Damage is the result of localized loss of metal, which can be assessed in terms of the size of these individual corrosion flaws. Magnetic corrosion logging has been available for at least 25 years, but has not received wide acceptance as a basis for making intelligent repair decisions. An earlier PRCI-sponsored research study concluded that the best approach to short term improvement in the performance of current corrosion logging practice was the application of modern digital data acquisition techniques to one specific type of magnetic logging, namely, flux leakage or magnetic perturbation measurements. In this research program, experimental equipment of this type has been developed and demonstrated in conjunction with a cooperative effort with one of the logging companies (Dresser-Atlas). This equipment replaces the electronics assembly in the commercial instrument with a new package which samples each of the 12 (or 24) analog flux leakage sensor signals at a rate of either 86.8 or 173.6 samples per second, depending upon whether 24 of the sensors or only 12 are being sampled. The signals are digitized at this rate under the control of a downhole microprocessor, which formatsthe digital data into a serial bit stream and transmits it to the surface over standard logging cable. The data transmission system uses Manchester encoding and performs the data transfer at a maximum rate of 40,000 bits per second.
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Grauer et Chapman. L52330 Development of an Active Air Control System. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), mars 2012. http://dx.doi.org/10.55274/r0010447.

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Develop an active air control system that, when installed on a turbocharged-engine system, will reduce NOX emissions below the levels of the system alone. While the turbocharged-engine system allows the natural gas compression industry to decrease pollutant emissions via increased air flow, the physics of the system and the environments in which these systems operate restrict further advancements. A new model, the Charge Air Integrated Manifold Engine Numerical Simulation (CAIMENS). The CAIMENS model was used to: Quantify the effects of charge air imbalance between cylinders in terms of NOX production; Illustrate that an imbalance in mass air flow creates a one-to-one imbalance in corrected trapped equivalence ratio Reveal a 5% to 12% imbalance in air flow present in the candidate Cooper GMV engine which correlated to a 65% to 92% imbalance in NOX production; and Provide detailed information that led to the specification of a mass air flow (MAF) sensor coupled with an air flow balancer (AFB), comprising the Active Air Control (AAC) system. The research team proceeded by working with the ERLE team to select cylinder liners for the NGML air flow bench, and then expanded the air flow bench from one cylinder to two cylinders. The specified AAC system was installed on each of the two cylinders. The research team then conducted a series of experiments to evaluate and fine tune the AAC system. The AAC system was able to correct up to a 12.4% air imbalance. The end point of the project was an AAC system that could, with some engineering effort, be applied to field engines. Benefit: The resulting technology was an active air flow control system consisting of an AFB integrated with a MAF sensor. The AFB has characteristics analogous to that of a throttle plate used in a carbureted internal combustion engine.
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Sabel, Charles. Developing Economies as Toyota Production Systems : Why the Analogy Makes Sense, How It Can Inform Industrial Policy. Inter-American Development Bank, novembre 2005. http://dx.doi.org/10.18235/0006841.

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This presentation discusses developing economies in Latin America as compared to the Toyota Production System (TPS), an integrated socio-technical system, developed by Toyota, that comprises its management philosophy and practices. A comparison of INTA in Argentina and elsewhere is given. The author finds that the current production design and set up are provisional, but can be incrementally improved by benchmarking, error detection and correction. This presentation was presented at the Latin America/Caribbean and Asia/Pacific Economics and Business Association (LAEBA)'s 2nd Annual Meeting held in Buenos Aires, Argentina on November 28th-29th, 2005.
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